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Class 11 Economics Case Study Questions

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Economics is the most preferred subject of class 11 students who opt for the Commerce or Humanities stream. CBSE has introduced the format of class 11 Economics case study questions in the syllabus for the new academic session. It is a well-integrated program that highlights the general economic terms and their utility in our daily lives.

Economics class 11 plays a vital role in constructing and strengthening the foundation of major economic theories and concepts that are studied in depth at an advanced level in class 12 Economics. Class 11 Economics is not very easy but with practice and proper guidance, students can ace the subject. 

Case Study Questions in Class 11 Economics

CBSE introduced case-based questions in class 11 Economics question paper last year i.e-  2021 to uplift analytical reasoning in students. CBSE introduced a few changes in the Economics class 11 question paper so as to enhance and develop analytical and reasoning skills among students. The questions would be based on real-life situations encountered by the students.

The Purpose

The sole purpose of introducing case-based questions in the class 11 curriculum by CBSE was to drift from rote learning to competency and situation-based learning.

NEP 2020 and Case Studies

Sanyam Bhardwaj, controller of examinations, CBSE focussed on the fact that case-based questions would enhance the critical reasoning skills of the students. He highlighted the fact that adding such questions to the examination was a step towards achieving the goals of the National Education Policy (NEP) 2020.

Implementation in class 11

According to the new examination guidelines released by CBSE for the current academic year, case study-based questions would be asked in the class 11 Economics exam too. Initially, when CBSE introduced case-based questions, a panic situation was created among the teachers as well as students. The concept was new and unexplored.

Format of Case Studies in Economics

A comprehensive passage is provided in the question paper, on the basis of which the student is required to solve the given case-based question asked in the Economics class 11 exam. Initially, the case-based questions appeared to be puzzling and tricky for both the students and the teachers. Perhaps, they were not willing to experiment with the new pattern but now a lot more clarity is there that has made the question paper quite favorable for the students.

You can Score High

Economics is a subject of paramount importance for the students who have opted for the Commerce / Humanities stream in class 11. The subject is high scoring and facilitates the students to increase their percentile and excel in academics.

Economics syllabus of class 11 

The entire Economics Syllabus is divided into 2 parts:

• Part A, Statistics
• Part B,  Microeconomics

Syllabus Design

CBSE has designed the entire syllabus for Economics , grade 11 in such a way that it enables the students to analyze various economic issues and develop the ability to deal with them. The complete syllabus is categorized into 7 units, so as to facilitate the students as well as teachers to clearly visualize and comprehend all the listed topics in the NCERT textbooks for class 11 Economics.

NCERT Books

It is recommended to go through the textbooks rigorously. Two books have been published by NCERT. Economics is a vast subject and the class 11 syllabus cannot be taken lightly as it forms the base for the CBSE class 12 board exam too. Students need to follow and practice other reference books but  NCERT textbooks need to be read in-depth in order to excel in this commerce stream subject.

CBSE Class – 11 Economics (Code No. 030)

Theory: 80 Marks (3 Hours) Project: 20 Marks

Case Study Passage (Economics class 11)  

As part of these questions, the students would be provided with a hypothetical situation or text, based on which reasoning questions will have to be answered by them. It is a must for the students to read the passage carefully prior to attempting the questions. These questions can be based on each chapter in the NCERT textbooks for Economics class 11. Students must prepare well for the case-based questions before appearing for their Economics exam as these questions demand complete knowledge of the various concepts in their syllabus. CBSE plans to increase the weightage of such questions in the upcoming years.

Kind of case-based Questions in Economics

Economics is one of the fundamental subjects for commerce students that opens the various ways of achieving social welfare and getting maximum satisfaction with the limited resources available in the economy. The subject is demanding and definitely requires a greater effort from the students in order to strive for a perfect score. CBSE plans to increase the weightage of case-based questions in class 11 economics question papers that are prepared by the schools on the guidelines issued by CBSE itself. 

The case-based questions asked in the Economics question paper for class 11 can be formulated in 2 ways:

• Objective: these will be asked in the MCQ format
• Subjective: these would be answered briefly or might require some calculations /formula application.

As per the latest circular issued by CBSE on Assessment and Evaluation practices of the board for the session 2022-23, CBSE has clearly mentioned that competency-based questions including case studies will be different from subjective questions. 

Case-based  questions can be segregated in terms of their difficulty level too:

• Direct questions: such questions can be easily solved as their answers are there in the given passage itself.
• Indirect/ analytical questions: these questions demand complete and thorough knowledge of the concepts. Their solution is not visible in the passage, but it would be based on the theory that would be highlighted in the text provided in the question paper. The student is expected to read the passage carefully, analyze it and then solve it.

How To Prepare For Case-based Questions? 

Students need to prepare well for the case-based questions before appearing for their class 11 Economics exams. Here are some tips which will help the student to solve the case-based questions at ease:

• Read the provided text carefully
• Try to comprehend the situation and focus on the question asked
• Analyze and carefully answer the question asked
• Students may follow a reversal pattern, especially Microeconomics questions, i.e read the asked questions first and then look for the solutions in the given passage. The process will definitely save time.
• Do not neglect the theoretical concepts of Statistics, this is vital for achieving a perfect score.
• Practice extensively, especially for the numerical. This would help the student to memorize formulas. 
• Provide to the point responses
• Master all major concepts of your NCERT textbooks 

Students need to strengthen their fundamentals in order to ace the Economics class 11 CBSE  exam. Case studies can be easily solved if your key concepts are crystal clear. These simple points if kept in mind will definitely help the students to fetch good marks in case study questions in class 11 Economics. 

Case Study Question Examples in Economics

Here a re some given case study questions for CBSE class 11 Economics. If you wish to get more case study questions and other study material, download the myCBSEguide app now. You can also access it through our student dashboard.

Class 11 Economics Case Study 1

Read the following Case Study carefully and answer the questions on the basis of the same:

If our income rises, we generally tend to buy more of the goods. More income would mean more pens, more shirts, more shoes,  more cars and so on. But there are exceptions. If initially, you are buying coarse grain, how would you take your increase in income now? Perhaps, as a first step, you would discard the consumption of inferiors. Surely, this happens in the deserts of Rajasthan where the rich minority eats wheat while the poor majority eats Bajra as their staple food. 

• The law of demand does not apply to __________________ goods. (Normal/ Giffen)
• Inferior goods are those whose income effect is_____________. (Negative/ Positive)
• upward movement on the demand curve.
• downward movement on the demand curve
• rightward shift of the demand curve
• leftward shift of the demand curve
• becomes a horizontal straight line
• becomes a vertical straight line
• shifts to the right
• shifts to the left

Answer Key:

• Leftward shift of the demand curve
• Shifts to the left

 Class 11 Economics Case Study 2

Census of India is a decennial publication of the Government of India. It is published by Registrar General and Census Commissioner, Under Ministry of Home Affairs, Government of India. It is a very comprehensive source of secondary data. It relates to population size and various aspects of demographic changes in India. Under the Ministry of Home Affairs, Government of India. It may be of historical interest that though the population census of India is a major administrative function; the Census Organisation was set up on an ad-hoc basis for each Census till the 1951 Census. The Census Act was enacted in 1948 to provide for the scheme of conducting population census with duties and responsibilities of census officers. The Government of India decided in May 1949 to initiate steps for developing systematic collection of statistics on the size of the population, its growth, etc., and established an organisation in the Ministry of Home Affairs under Registrar General and ex-Officio Census Commissioner, India.

• Data originally collected in the process of investigation are known as ________ (Primary data/ Secondary data).
• The problem of double conclusion arises in ________ (indirect oral investigation/ direct personal interview).
• Post independence, the first census of India was conducted in ________ (1949/1951)
• Census of India is carried out once in ________ years. (10/ 5)
• Primary data
• Indirect oral investigation

Class 11 Economics Case Study 3

Read the following  Case Study carefully and answer the questions on the basis of the same: Unpublished data or literature is known as grey literature in research. (The term ‘grey literature’ also includes data published in a non-commercial form, such as a conference proceeding.) These data are collected by the government organisations and others, generally for their self-use or office record. Unpublished data is useful mainly in secondary research, such as literature reviews and systematic reviews. It provides pointers to new research and perhaps also research paths to avoid. Preprints are a growing form of unpublished data these days and have proved very useful in guiding research in critical areas such as COVID-19.  Published sources of secondary data are government publications, semi-government publications, publications of research institutions, international publications etc.

• ________ data are collected from published or unpublished reports. (Primary/ Secondary)
• In the case of a ________, answers are to be written by the enumerators specifically hired for the purpose. ( Questionnaire/ Schedule)
• ________ publish data relating to education, health, births and deaths. (Government publications/ Semi- Government Publications)
• 76th round of NSSO was on ________ (Persons with disabilities and drinking water/ density of population)
• Secondary Data
• Semi- Government Publications
• Persons with disabilities and drinking water

Advantages of case study questions in Economics

Class 11 Economics syllabus is divided into 2 books and CBSE can ask case study questions from any of them. Students are expected to prepare themselves thoroughly for both books. They ought to practice class 11 Economics case-based questions from the various options available to them, so as to excel in the subject.

• Enhance the analytical skills of students
• Provide a complete and detailed understanding of the concepts
• Inculcate intellectual capabilities in students
• Help students retain knowledge for a longer period of time
• The questions would help to discard the concept of rote learning
• Case studies promote and strengthen practical learning.

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NCERT Solutions for Class 11 Statistics Chapter 2 - Collection Of Data

• NCERT Solutions
• Chapter 2 Collection Of Data

Class 11 Statistics NCERT Solutions for Chapter 2 Collection of Data: Free PDF Download

CBSE Class 11 students can now access the NCERT Solutions for Statistics Chapter 2 Collection of Data for free. Each question in the NCERT Class 11 Statistics Chapter 2 comes with a thorough and step-by-step answer, as well as illustrations and explanations (wherever applicable) to help students understand the concepts and solve the problems. Top subject-matter experts at Vedantu’s created NCERT Solutions for Statistics Chapter 2 Collection of Data, who aim to provide comprehensive and precise explanations of the topics covered in the chapter through solved textbook question answers. Students can download the solutions through the pdf link provided below.

Topics Covered in Class 11 Statistics Chapter 2

Below are the key topics covered in the Class 11 Statistics Chapter 2.

Meaning and purpose of data collection

What are the different sources of data?

How do we collect data?

Census and Sample Surveys

Sampling and Non-Sampling Errors

Census of India and NSSO

NCERT Solutions for Class 11 Statistics Chapter 2 Collection of Data

Statistics Class 11 NCERT Solutions Collection of data is available in a PDF format that is free to download. If the students can download it once, they don’t have to bother about the internet connection. Also, these PDFs help recollect at the time of examinations. These PDFs are also helpful to share between the friends by taking hardcopy. It can be stored for the future as a reference for competitive examinations.

Brief Overview of the Topics Covered in Class 11 Statistics Chapter 2

1. introduction.

In this section, the NCERT Solutions of Class 11 Chapter 2 of Statistics gives a quick recap of economics and statistics, which they have already learned in their previous chapter. Also, it explains to students that they are about to know the importance of data and the sources of data, and the available modes to calculate and represent the data. 

2. What are the sources of Data?

NCERT Solutions Class 11 Statistics Chapter 2 wants to introduce the different data sources with which we can proceed to the next level of implementing a project. Here, the students will learn that the data sources are of two types. One is the primary source we can collect by conducting surveys or inquiries. This is also known as first-hand information. In contrast, another source of collecting the data is the secondary source. It can be obtained from a third-party agency, documents, newspapers, reports, search engines, or others.

3. How do we collect the Data?

As the main aim of Chapter 2 of Statistics is collecting the data, it is essential to teach the students how we need to collect the data from either source. Class 11 Statistics NCERT Solutions Chapter 2 has given a high priority to explaining the data collection process. It involves the preparation of questionnaires as well as the mode of collecting the data. The preparation of a questionnaire has several guidelines regarding how to prepare questionnaires. Also, students learn that the questionnaire depends on the context and the product we will survey. 

NCERT Class 11 Statistics Chapter 2 Collection of data explains three different data collection modes. And each mode is illustrated with a set of examples along with their pros and cons. The modes are personal interviews, mailing questionnaires, and telephonic interviews. In this section, students also learn a new topic called a pilot survey. It is a sample survey that can be a trial version done on a limited group of people .

4. census and sample surveys.

This section of the chapter concentrates on two kinds of sampling methods. One is random sampling, and the other is non-random sampling. The NCERT Solutions for Class 11 Statistics Chapter 2 explain each method with illustrations.

5. Sampling and Non-sampling Errors

NCERT Solutions for Class 11 Statistics Chapter 2 also helps students be aware of the errors which may occur during the surveys. This allows students to mark their ultimate results in practical projects at the workplace. As we all know, prevention is better than cure, these solutions aim to clarify rather than rectify mistakes.

6. Census of India and NSSO

Here the students will understand the current scenario of our country and the other Sensex organisations. This knowledge will help the students to understand the importance of statistics and their tools. From there, the students should be attended to while learning these concepts.

Important Questions for Practice

Very short answer type questions.

What is data?

What is primary data?

What is secondary data?

Name the instruments used in the survey.

Short Answer Type Questions

What is the disadvantage of mail surveys?

What does the term population mean in Statistics?

What is random sampling?

How are non-random saplings selected?

What is a non-response error?

Long Answer Type Questions

How do we collect the data?

Explain sampling and non-sampling errors in brief.

How do errors arise in the data acquisition process?

Key Takeaways of the NCERT Solutions of Class 11 for Statistics Chapter 2 Collection of Data free pdf

The NCERT Solutions of Class 11 Statistics PDF which is available on the official website of Vedantu is very helpful in providing knowledge. Some of the benefits are as follows:

It provides a lot of information on every topic and gives examples.

Experienced subject experts prepare the material and provide updated versions.

They contain both solved and unsolved test papers to score better marks.

NCERT Solutions of Class 11 for Statistics Chapter 2 Collection of Data PDF available on the official website of Vedantu has concluded this chapter by explaining six different concepts along with the examples and exercise questions. Download the pdf and improve your understanding of the chapter.

FAQs on NCERT Solutions for Class 11 Statistics Chapter 2 - Collection Of Data

1. Do samples provide better results than surveys? Explain.

It is not a matter of comparison between the samples and the survey. Because both the methods are effective in providing primary data. The effectiveness of the survey depends on the number of people. Similarly, the effectiveness of a sample depends on the size of the sample. Also, it is important to verify whether it is a random sample or a nonrandom sample.

2. Explain various modes of collecting the data?

We have three major modes of collecting the data. Each has its advantages and disadvantages. They are as follows:

Personal interviews are the interviews conducted face to face. It has a high response and can provide open-ended questions. The reliability is high compared to other methods.

Mailing questionnaires is sending a set of questions through emails. It doesn't disturb or consume the time of people. It also gives reliable answers without any inferiority or ambiguity. But we can't expect more people to answer.

Telephone interviews are the interviews done by telephone. It is very cheap and provides more reliability. But consumes a lot of time and many people may refuse unknown calls.

3. What is the collection of data in Chapter 2 of Class 11 Statistics?

Data is defined as a tool that helps make a sound conclusion based on the collected information. The collection of data is important for statistical investigation. Data may be collected from different sources such as primary sources, secondary sources, published sources, and unpublished sources. Primary data is the data collected from the primary source that means from the source of origin. Secondary data is collected from a secondary source which means it is collected from some agency. 

4. How do we collect the data in Chapter 2 Class 11 Statistics?

Data collection is necessary for statistical investigation. Data can be collected from different sources. Primary data may be collected from: 

A personal interview

Sending emails

Telephonic interview

Collecting information from local sources

Enumerator method

Secondary data may be collected from published and unpublished sources. Published sources include government publication, semi-government publication, reports of committees and private and international publications. Unpublished sources include records maintained by private companies, scholars, workers etc. 

5. Write a short note on data collection for Class 11.

Data collection is the process of collecting information from different sources to conclude. There are two types of data, primary data and secondary data. The two types of data are collected from different sources. The primary data is collected directly from the source through observations, experiments, and surveys. The secondary data is collected by some other person and not by the user. The secondary data may be collected from books, magazines, newspapers, etc. 

6. What is the source of data Class 11?

A source of data is an agency from where the data is collected. It may be a primary source or a secondary source. Primary source gives us primary data, and secondary source gives us secondary data. A primary source is directly related to the user, and the example of a primary source is experiments and observations made by the person. A secondary source is already available, and another person collects data. For example, newspapers, magazines, journals, books are examples of secondary sources. 

7. Where can I find NCERT Solutions Class 11 Statistics Chapter 2?

Students can download NCERT Solutions Class 11 Statistics on the internet. Vedantu provides NCERT Solutions Class 11 Statistics Chapter 2 in easy and simple language. Students can visit the website and the app. They can download the PDF file free of cost on their computer and can revise from the NCERT Solutions for their exams. All answers are given in simple language and prepared by expert subject teachers to help students understand the concepts properly. 

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• Economics /

Class 11 Collection, Organisation and Presentation of Data

• Updated on  
• Jun 22, 2023

The collection of data aims to collect evidence for attaining a sound and comprehensible solution to a problem. To understand the inconsistencies in the output, we need the ‘data’ on the generation. It is a process which is conducted to measure and gather information. ‘Data’ is a device, which aids in the comprehension of problems by providing knowledge. Here is this blog, we will talk in detail about the Class 11 collection, organisation and presentation of data. 

Must Read: Business Services Class 11 Notes

This Blog Includes:

What are the sources of data, primary data, secondary data, preparation of instrument, mode of data collection, personal interviews, mailing questionnaire, telephone interviews, pilot survey, census and sample surveys, census , random sampling, non-random sampling, sampling errors, non-sampling errors, census of india and nsso.

To understand more about the chapter Class 11 collection, organisation and presentation of data, we fist need to know the sources of data. Statistical data can be obtained from two sources:

• Primary data

We further move on to the concept of primary data in class 11 collection, organisation and presentation of data. The important points of primary data are:

• The enumerator (person who assembles the data) may collect the data by administering an inquiry or research. Such data is called Primary Data , as it is formulated on first-hand information.
• Primary data are unique, do not require any modification, and are costly.

Next important form of data in class 11 collection, organisation and presentation of data is secondary data.

• If the data have been examined and analyzed by another agency, they are called Secondary Data . Usually, the issued data are secondary.
• They are already in the presence and therefore are not unique.
• It demands to be modified to satisfy the aim of the study at hand.
• Secondary data are low priced.

How do we collect Data?

Collection of data is important in class 11 collection, organisation and presentation of data. It is done by the following ways:

• The survey aims to describe characteristics like cost, worth, utility (in case of the product) and reputation, honesty, loyalty (in case of the nominee).
• The objective of the survey is to gather data and is a method of gathering information from individuals.

The most prevalent type of tool employed in surveys is a questionnaire/ interview schedule. The questionnaire is either self-directed by the interviewee or conducted by the enumerator or qualified investigator. While drawing-up the questionnaire/interview schedule, the following points should be kept in mind:

• The questionnaire should not be lengthy.
• The array of problems should move from indefinite to distinct.
• Questions should not be enigmatic.
• Questions should not use binary negatives. 
• Questions should not be leading.
• Questions should not indicate choices. 

Also Read: Emerging Modes of Business Class 11 Notes

The next important topic in class 11 collection, organisation and presentation of data is the mode of data collection. The aim of probing questions is to survey the acquisition of data. There are three ways of collecting data: 

• Mailing (questionnaire) Surveys

Personal interviews form an important part of the mode of data collection in class 11 collection, organisation and presentation of data. In this method, the researcher has the main role as he/she conducts the interviews face-to-face with the respondents. Personal interviews are preferred due to various reasons:

• Highest Response Rate 
• Allows use of all types of questions 
• Better for using open-ended questions 
• Allows clarification of ambiguous questions.

The personal interview has some demerits too:

• Most expensive 
• Possibility of influencing respondents 
• More time taking

Another important part of class 11 collection, organisation and presentation of data is the mailing questionnaire. In such a method, the data is collected through the mail. The questionnaire is mailed to each person and a  request is attached to complete and return it on time. 

The advantages of this method are:

• Least expensive 
• The only method to reach remote areas 
• No influence on respondents 
• Maintains anonymity of respondents 
• Best for sensitive questions

The disadvantages of mail surveys are:

• Cannot be used by illiterates 
• Long r esponse time  
• Does not allow an explanation of unambiguous questions  
• Reactions cannot be watched 

In telephone interviews, the investigator asks questions over the telephone. 

The advantages of telephone interviews are:

• Relatively low cost 
• Relatively less influence on respondents 
• Relatively high response rate.

The disadvantages of this method are:

• Limited use 
• Possibility of influencing respondents

Explore: Accountancy Class 11 NCERT Solutions

The pilot survey is another important tool in class 11 collection, organisation and presentation of data.

• After the questionnaire is ready, it is desirable to carry a try-out with a diminutive group, known as Pilot Survey or Pre-Testing of the questionnaire . 
• The pilot survey serves to give a preliminary impression of the survey. 
• It helps to pretest the questionnaire and know the lapses and drawbacks.
• It also aids to assess the appropriateness of questions, the accuracy of guidance, the administration of enumerators, and the expense and time required in the actual survey.

Census and sample surveys are an important tool in class 11 collection, organisation and presentation of data. 

• A survey, which encompasses every component of the population, is apprehended as Census or the Method of Complete Enumeration.
• The primary feature of this approach is that this comprises every individual unit in the whole population.

Sample Survey

• A sample refers to a section of the population from which information has to be taken. A good sample (representative sample) is usually short and competent in giving reasonably accurate information about the population at a lower cost and in less time.
• Most of the surveys are sample surveys and are preferable in statistics because of several reasons.
• A sample can give rationally secure and authentic information at a lower cost and in less time. 
• Now the question is how do you do the sampling? There are two main types of sampling:
• Non-random Sampling
• It is also known as the lottery method.
• Random sampling is where the specific units from the population (samples) are randomly selected. 
• In random sampling, each person has an equal possibility of being chosen, and the person who is selected is the same as the one who is not selected.
• Random number tables are generated to ensure an equal chance of selection of every single unit in the population.
• They are accessible either in an issued form or can be generated by employing relevant software packages.
• In this method, units of the population don’t have equal chances of being selected. 
• The convenience or interpretation of the investigator plays a crucial role in the adoption of the sample. 
• They are chiefly selected based on belief, purpose, ease, or quota and are non-random samples.

Sampling and Non-sampling Errors

While conducting surveys, in class 11 collection, organisation and presentation of data, sample and non-sampling errors find an important mention. 

• Sampling error applies to the variations between the sample estimate and the actual value.
• It is the error that transpires when you observe the sample taken from the population. 
• The point of differentiation between the actual parameter of the population and its estimate is known as sampling error. 

Non-sampling errors are more consequential than sampling errors. Sampling error can be minimized by taking a larger sample, on the other hand, it is difficult to minimize non-sampling error. Even a Census can carry non-sampling errors.

 Some of the non-sampling errors are:

• Errors in Data Acquisition: This type of error stems from recording inaccurate responses.
• Non-Response Errors: Non-response happens if an interviewer is incapable to contact a person listed in the sample or a person from the sample declined to respond. In this case, the sample research may not be representative.
• Sampling Bias: Sampling bias happens when the sampling plan is such that some portion of the target population could not possibly be incorporated into the sample.

Must Read: Class 11 Oscillations Notes

The census of India is a very important body of our country and is an important part in the chapter class 11 collection, organisation and presentation of data. 

• The Census of India and the National Sample Survey Organisation (NSSO), are two significant firms at the national level, which gather, manner, and tabulate data.
• The Census of India produces the most comprehensive and continuous demographic record of the population. 
• The NSSO was established by the Government of India to conduct nationwide surveys on socio-economic issues. 
• NSSO gives periodic measures of education, school enrolment, utilization of educational aids, employment, unemployment, manufacturing, and service sector enterprises, morbidity, maternity, child care, utilization of the public distribution system, etc.

Ans. Three methods exist for gathering data: Personal meetings. Telephonic Interviews, and mailing surveys with questions.

Ans. The term “presentation of data” refers to the display of data in a way that makes it easy for viewers to understand and examine it.

Ans. Based on the methods used to acquire them, data can be divided into four basic categories: observational, experimental, simulational, and generated. The kind of research data you gather may have an impact on how you manage that data.

Also Read: Class 11 Formation of a Company

We hope the Class 11- Collection of Data notes helped you understand the essential concepts covered in this chapter. Still unsure about which stream to choose after Class 12. Our Leverage Edu experts are here to guide you in selecting the right stream of study to make sure that you make an informed decision. Sign up for a free session with us now!

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NCERT Solutions for Class 11th: Ch 2 Collection of Data

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Collection of Data Class 11 Notes PDF (Handwritten & Short Notes)

For some students, Collection of Data can be complex and difficult. To understand each and every topic in an easier way, students can look through the Collection of Data Class 11 notes. After understanding the chapter Collection of Data, it is important for students to practise many questions from Class 11 Economics notes so that level of understanding can be evaluated. 

After practising questions from the Collection of Data Class 11 notes, students can also go through the solutions. These answers and solutions for given questions are explained in an elaborate manner. Through this explanation, students can easily decrease the errors done while attempting questions. Accordingly, students can increase their efficiency level for the chapter Collection of Data. 

Collection of Data Class 11 Notes PDF

The Collection of Data Class 11 notes are created by our subject matter experts in a creative way. This short and compressed content is easily and freely accessible through the Selfstudys website. Easy and free access to the Class 11 Economics Notes PDF can be useful for all students who are in need. 

How to Download the Collection of Data Class 11 Notes?

To have a brief knowledge about the chapter and to practise regularly, students can go through the given steps.

• Open the Selfstudys website on your device. 
• Click the navigation button which can be seen on the top of the page. 
• Select NCERT Books & Solutions. 
• A pop-up menu will appear, select NCERT Notes from the given list.

• A new page will appear, select Class 11th from the list of classes. 
• Now click Economics from the list of subjects.

• Again a new page will appear, select the chapter Collection of Data Class 11 notes. 

Features of Collection of Data Class 11 Notes

These Collection of Data Class 11 notes are considered to be an important study material by students. As it is great to keep a track on performance while preparing for the chapter Collection of Data. Here are some important features of the Class 11 Economics notes:

• Brief Summary is Given: When a student starts preparing for the chapter Collection of Data, a brief summary is very important. These brief summaries are given in the Collection of Data Class 11 notes. According to the given summary, students can get a brief idea about the chapter. 
• All Sorts of Questions Are Provided: After finishing the chapter, students need to practise all sorts of questions which are provided in the Class 11 Collection of Data notes. Practising questions in a uniform way can help students to improve their level of understanding. 
• Answers to the Questions are Given: Answers are given to each and every question included in the Collection of Data Class 11 notes. With the help of the answers given, students can easily solve all their doubts regarding the chapter. 
• Frequently Asked Questions by the CBSE Board are Given: Inside the Class 11 Economics notes, frequently asked questions of the chapter Collection of Data by the CBSE board are also given. Through this, students can get an idea about the level of difficulty in the Class 11 CBSE board. 
• Numerals and Solutions are Given: For the chapter Collection of Data, some numerical questions are also given with solutions. With the help of numericals, students can easily improve their level of accuracy while attempting questions.  
• Chapter Name is Included: Inside the Class 11 Economics notes, chapter name of Collection of Data is given. By looking through the chapter name, students can get a brief idea about what all need to be covered. 

Advantages of Collection of Data Class 11 Notes

The Collection of Data Class 11 notes can be beneficial throughout the preparation as it is a good source of information. This is one of the important advantages while preparing for the chapter Collection of Data. Some other advantages are: 

• Explained in a Concise Manner: In the Class 11 Business Studies notes, topics and definitions of the chapter Collection of Data are explained in a concise manner. So that students can have proper and accurate information in a few words.  
• Improves Accuracy Level: Being accurate means to write or mark the answers correctly without any kind of errors. Practising questions on a uniform basis, students can easily improve their accuracy level. 
• Improves Inner Confidence: Getting to know and practise the frequently asked Collection of Data questions, students can maintain and improve their inner confidence. Self-confidence is a must for Class 11 students so that they can remove stress and anxiety. 
• Provided in Simple Language: Questions and concepts are explained in an easy and simple language in the Class 11 Collection of Data notes. Simple language of the Class 11 notes can also help weak students to understand the chapter in a better way.  
• Important Recalling Tool: The Collection of Data Class 11 notes are considered to be an important recalling tool. For all students, it is a must to recall the given topics. Students can use the Collection of Data Class 11 notes as it is considered ideal for the revision purpose.  
• Eye-Catching Format: These Class 11 Economics notes of chapter Collection of Data are presented in an eye-catching format where diagrams are given, short and precise definitions along with the colourful images are given. This format can attract many students to look through the Class 11 Economics and study accordingly.

What are Collection of Data Class 11 Notes and Why Is It Popular?  

The Collection of Data Class 11 notes are considered to be necessary study resources as it includes all the important topics and concepts. With the help of notes, students can build a strong foundation for the chapter Collection of Data. A strong grip for the chapter Collection of Data is important for all students to perform and score better in the chapter. 

It is popular among students because the revision notes of Class 11 Collection of Data saves student’s time and helps them clear their doubts in less time. Also, the notes are easier to grasp which allow students to cover more topics in a short span of time.

Super Easy Ways To Learn Through Collection of Data Class 11 Notes

Before starting to learn through the Collection of Data Class 11 notes, students need to first cover the chapter from the NCERT Class 11 Economics book. In the chapter, all the topics and concepts are explained in a broad way. After completing the chapter Collection of Data, students can solve questions in a proper way. These questions and answers of the chapter are also given clearly in the Class 11 Economics notes. Taking help of Class 11 Economic notes students can ease their preparation process and can perform well in the chapter Collection of Data questions. 

Tips to Cover the Chapter Collection of Data Class 11 Notes

Students are requested to follow basic tips to cover the chapter Collection of Data so that they can perform better in those questions. Some of the important and basic tips are: 

• Complete the Chapter: Major step in preparing well is to complete the chapter Collection of Data given in the Class 11 NCERT Economics book. Students need to read and understand each topic in the chapter Collection of Data. 
• Fix a Proper Routine: While preparing for the Economics chapter Collection of Data, students need to fix and maintain a proper schedule. Students need to include short breaks at frequent intervals in the schedule. With the help of systematic routine, students can easily cover the Class 11 Economics chapter. 
• Take Own Notes: While understanding and studying the chapter Collection of Data, students can make their notes. Inside the notes, all the topics and concepts need to be elaborated in a proper manner. 
• Practise Questions: After completing the chapter Collection of Data, students can easily practise questions in a better way. Students can exercise questions from the NCERT Class 11 Economics book or the Collection of Data Class 11 notes. 
• Maintain a Proper Diet: While completing the chapter Collection of Data, students need to maintain a proper and healthy diet. Unhealthy diet of a student can decrease their level of concentration. As concentrating towards the Collection of Data is important to complete the chapter in a proper way because it can help students score better marks.
• Take Note of Mistakes: Students are suggested to take a note of all the earlier mistakes made. This can help them to analyse the mistakes and rectify them accordingly. 
• Pay Attention to Topics and Concepts: It is important for students to recall all topics and concepts of Collection of Data to be able to perform well in the board examination. Therefore, the best method to use the Collection of Data Class 11 Notes is to recall the studied topics and concepts using revision notes.
• Prefer Day Study: While completing the chapter Collection of Data, students should prefer day study. Daylight is better than artificial light, accordingly students can improve their concentration skill in the daytime. 

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The Collection of Data Class 11 notes contains the most relevant content. Relevant content means how well the information is presented so that students can use it. Accordingly, students don’t need to search for something relevant here and there. With the help of relevant content students can understand the chapter Collection of Data in a better way.

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NCERT Solutions For Class 11 Statistics Chapter 2 Collection Of Data

Class 11 statistics chapter 2 collection of data.

NCERT Solutions For Class 11 Statistics Chapter 2 Collection Of Data, (Statistics) exam are Students are taught thru NCERT books in some of state board and CBSE Schools.  As the chapter involves an end, there is an exercise provided to assist students prepare for evaluation.  Students need to clear up those exercises very well because the questions withinside the very last asked from those. 

Sometimes, students get stuck withinside the exercises and are not able to clear up all of the questions.  To assist students solve all of the questions and maintain their studies with out a doubt, we have provided step by step NCERT Solutions for the students for all classes.  These answers will similarly help students in scoring better marks with the assist of properly illustrated solutions as a way to similarly assist the students and answering the questions right.

Question 1. Frame at least four appropriate multiple choice options for following questions (i) Which of the following is the most important when you buy a new dress? (ii) How often do you use computers? (iii) Which of the newspapers do you read regularly? (iv) Rise in the price of petrol is justified. (v) What is the monthly income of your family? Answer: (i) Which of the following is the most important when you buy a new dress?

• Price of the dress
• Fabric of the dress
• Colour of the dress
• Brand of the dress

(ii) How often do you use computers?

• At least once a day
• At least once a week
• At least once in fortnight
• Occasionally

(iii) Which of the newspapers do you read regularly?

• Times of India
• Hindustan Times
• Indian Express

(iv) Rise in the price of petrol is justified.

• Strongly agree
• Strongly disagree
• Neither agree nor disagree
• Somewhat agree

(v) What is the monthly income of your family?

• Less than ₹ 10,000
• More than ₹ 10,000 but less than ₹ 25,000
• More than ₹ 25,000 but less than ₹ 50,000
• More than ₹ 50,000

Question 2. Frame five two-way questions (with ‘Yes’ or ‘No’). Answer:

• Are you an Indian? (Yes/No)
• Do you live in Delhi? (Yes/No)
• Are you graduate? (Yes/No)
• Do you know swimming? (Yes/No)
• Have you ever been convicted by a court of law? (Yes/No)

Question 3. State whether the following statement are true or false. (i) There are many sources of data. (True/False) Answer: False There are mainly two sources of data : Primary and Secondary.

(ii) Telephone survey is the most suitable method of collecting data, when the population is literate and spread over a large area. (True/False) Answer: False Mailing questionnaires would be more suitable as the population is literate. Telephonic survey is most suitable in case of illiterate population spread over a large area.

(iii) Data collected by investigator is called the secondary data. (True/False) Answer: False Investigator may collect the data by conducting an enquiry or an investigation. Such data are called primary data, as they are based on first hand information.

(iv) There is a certain bias involved in the non-random selection of samples. (True/False) Answer: True In a non-random sampling method all the units of the population do not have an equal chance of being selected and convenience or judgement of the investigator may create a bias.

(v) Non-sampling errors can be minimised by taking large samples. (True/False) Answer: False It is difficult to minimise non-sampling error even by taking a large sample as they include Errors in Data Acquisition, Non-Response Errors and Sampling bias.

Question 4. What do you think about the following questions. Do you find any problem with these questions? If yes, how? (i) How far do you live from the closest market? Answer: This question is ambiguous people will not be able to answer this question as the different measures of distance like meters, kilometers, yards etc will complicate the analysis. It should be made specific as Flow many kilometers away is your home from the closest market?

• Less than 5 km
• Between 5-10 km
• More than 10 km

(ii) If plastic bags are only 5 per cent of our garbage, should it be banned? Answer: This question is a leading question, which gives a clue about how the respondent should answer by trying to point that 5% is a small percentage which can be tolerated. Better question would be Do you think plastic bags should be banned? (Yes)

(iii) Wouldn’t you be opposed to increase in price of petrol? Answer: This question comprises of two negatives which creates confusion to the respondents and may lead to biased response. Better question would be Would you opposed the increase in price of petrol?

(iv) (a) Do you agree with the use of chemical fertilizers? (b) Do you use fertilizers in your fields? (c) What is the yield per hectare in your field? Answer: The order or sequence of questions is incorrect. The series of questions should move from general to specific. The correct order would be (a) What is the yield per hectare in your field? (b) Do you use fertilizers in your fields? (c) Do you agree with the use of chemical fertilizers?

Question 5. You want to research on the popularity of vegetable atta noodles among children. Design a suitable questionnaire for collecting this information. Answer: Questionnaire Name …………………………………. Age ………………………………………… Address ………………………………… ………………………………………………. ……………………………………………… Gender: Male □ Female □ Question 1. Do you eat noodles? (a) Yes □ (b) No □

Question 2. Do you like noodles more than other snacks? (a) Yes □ (b) No □

Question 3. How many packets do you consume in a month? (a) Less than 2 packets □ (b) 3-5 packets □ (c) 5-8 packets □ (d) More than 8 packets □

Question 4. Do you prefer atta noodles over maida noodles? (a) Yes □ (b) No □

Question 5. Do you like vegetables in your noodles? (a) Yes □ (b) No □

Question 6. Do you think more vegetables should be added in vegetable atta noodles? (a) Yes □ (b) No □

Question 7. Which vegetables according to you should be added in vegetable atta noodles? …………………………………………………

Question 8. Do you think it should be spicier? (a) Yes □ (b) No □

Question 9. When do you prefer to have vegetable atta noodles? (a) In breakfast □ (b) In lunch □ (c) As evening snacks □ (d) In dinner □

Question 10. Do your parents also like vegetable atta noodles? (a) Yes □ (b) No □

Question 6. In a village of 200 farms, a study was conducted to find the cropping pattern. Out of the 50 farms surveyed, 50% grew only wheat. Identify the population and the sample here. Answer: The population or the Universe in statistics means totality of the items under study. It is a group to which the results of the study are intended to apply. In this case, the population is 200 farms in the village.

A sample refers to a group or section of the population from which information is to be obtained. A good sample (representative sample) is generally smaller than the population and is capable of providing reasonably accurate information about the population. In this case, the sample is 50 farms which are surveyed.

Question 7. Give two examples each of sample, population and variable. Answer: Example 1  A study was conducted to know the average weight of students of class seventh in Delhi. The total number of students in class seventh was 2860. Out of these 200 students were randomly selected and their weight was recorded. In this example

• Population is, the no of students of class seventh in Delhi, the total number of which is equal to 2860.
• Sample is, the 200 students selected whose weight was recorded.
• Variable under study, is the weight of the students.

Example 2  A person suffering from weakness and fatigue was advised by the doctor to have his blood test done for detection of anaemia. The pathologist took 2 ml of his blood for the test and tested the haemoglobin level in the blood. In this example

• Population is the total amount of blood in the person’s body.
• Sample is, the 2 ml blood tested.
• Variable under study, is the haemoglobin in the blood sample.

Question 8. Which of the following methods give better results and why? (a) Census (b) Sample Answer: (b) In terms of accuracy of results, census is better as it studies all the units of population but this method is very time consuming, expensive and sometimes not feasible to use. Hence, sampling is better due to following reasons

• Economical Sampling involves study, of a fraction of population and hence the cost involved In sampling is relatively low.
• Time Saving Huge amount of time is required to conduct a census survey while sample studies do not take that much time.
• Lesser Effort As only a part of the population is studied, it entails lesser effort on the part of the investigator than that required in census.
• Considerable Accuracy Results from sampling may not be as accurate as in case of sampling but the level of accuracy of these results can be established through statistical tests of significance and hence can be applied in general to the whole population if found significant.

Question 9. Which of the following errors is more serious and why? (a) Sampling error (b) Non-sampling error Answer: (b) Sampling error refers to the difference between the sample estimate and the actual value of a population characteristic. This type of error occurs when one makes an observation from the sample taken from the population. It is possible to reduce the magnitude of sampling error by taking a larger sample.

Non-sampling errors are more serious than sampling errors because a sampling error can be minimised by taking a larger sample but it is difficult to minimise non-sampling error, even by taking a large sample. Even a Census can contain non-sampling errors. These include errors in data acquisition, non-response errors and sampling bias.

Question 10. Suppose there are 10 students in your class. You want to select three out of them. How many samples are possible? Answer: In general, you use combinations to determine the number of ways you can select a sample of size n from a population of size N. The formula for the number of such combinations is N! (n!) (N – n)! where N! (spoken “Nfactorial”) equals N(N — 1)(N – 2)…(3)(2)(1) (e.g., 5! = (5) (4) (3) (2) (1) = 120 In this problem, our population size is N = 10 students, and our sample size is n = 3 students. Number of samples possible can be calculated as follows Number of samples = 10! (3!) (10 – 3)! = 10!(3)!(7)! = 10×9×8×7!3×2×1×7! = 120 possible random samples

Question 11. Discuss how you would use the lottery method to select 3 students out of 10 in your class? Answer: A representative (random) sample of 3 students can be taken out of 10 through lottery method. The names of all the 10 students of the class are written on 10 separate pieces of paper of equal size and all the slips are folded in a similar manner. These slips are then mixed well and 3 slips with these names are selected one by one so that all the students have equal chance of being selected in the sample.

Question 12. Does the lottery method always give you a random sample? Explain. Answer: Lottery method always gives a random sample if it is used in the proper manner without any bias. If the slips are prepared properly and drawn out one by one so that all the slips have equal chance of being selected in the sample, it will definitely give a random sample. But, if the slips are not mac . of identical size and identification is possible of the names or numbers on the slips, the selection will become biased.

Similarly, if the same name or number is written on more than one slip and if some name or number is missed then also the chances of selection of different units of population in the sample will not be equal. In such cases even lottery method will not give random sample.

Question 13. Explain the procedure of selecting a random sample of 3 students out of 10 in your class, by using random number tables. Answer: Random number tables have been devised to guarantee equal probability of selection of every individual unit in the population according to their listed serial number in the sampling frame. They are available either in a published form or can be generated by using appropriate software packages. The procedure of selecting a random sample of 3 students out of 10 in a class, by using random number tables is as follows

• Assign a specific number between 1 and 10 to all the 10 students.
• Here, the largest serial number is 10 which is a two digit number and therefore we consult two digit random numbers in sequence.
• We can start using the table from anywhere, i.e., from any page, column, row or point and select the first number randomly. We need to select a sample of 3 students out of 10 total students.
• We will select two more numbers from the table according to sequence. We will skip the random numbers greater than 10 since there is no student number greater than 10. Thus, the 3 selected students are with serial numbers.

Question 14. Do samples provide better results than surveys? Give reasons for your answer. Answer: A survey, which includes every element of the population, is known as Census or the Method of Complete Enumeration. On the other hand, when a part of the population is studied and predictions are made about the population based on this part, it is called sampling. In terms of accuracy of results, census is better as it studies all the units of population but this method is very time consuming, expensive and sometimes not feasible to use. Hence, sampling is better due to following reasons

• Economical Sampling involves study of a fraction of population and hence the cost involved in sampling is relatively low. Census costs are high especially in case of large population with wide coverage in terms of area.
• Time Saving Huge amount of time is required to conduct a census survey if the population size is large or spread over a wide area while sample studies do not take that much time to be conducted.
• Inappropriateness of Census In certain case, when the population is infinite or exhaustible, census cannot be done and hence sampling is the only choice, e.g., one cannot burn all the units of coal available to know their calorific value; sample is the only means of testing it.

Benefits of NCERT Solution for Class 11

NCERT Solution for Class 11 contains extremely important points, and for each chapter, each concept has been simplified to make it easier to remember and increase your chances of achieving excellent exam results. Exam Preparation References Here are some tips on how these solutions can help you prepare for the exam.

• This helps students solve many of the problems in each chapter and encourages them to make their concepts more meaningful.
• NCERT Solution for Class 11 encourage you to update your knowledge and refine your concepts so that you can get good results in the exam.
• These NCERT Solution For Class 11 are the best exam materials, allowing you to learn more about your week and your strengths. To get good results in the exam, it is important to overcome your weaknesses.
• Most of the questions in the exam are formulated in a similar way to NCERT textbooks. Therefore, students should review the solutions in each chapter in order to better understand the topic.
• It is free of cost.

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• Commerce Important Questions
• Class 11 Statistics
• Chapter 2 Collection of Data

Important Questions for Collection of Data

Important questions with answers for Collection of Data which is drafted by expert commerce teachers from the latest version of CBSE (NCERT) books.

CBSE Class 11 Statistics Chapter 2 Important Questions

Define primary data.

Primary data is the collection of data collected by the investigator for his own purpose for the first time. These are collected from the source of origin.

Define secondary data.

According to Wessel, “Data collected by another person is known as secondary data”. It is known as secondary data as it has already been collected by somebody else. These data are accessible in the form of a published and unpublished report.

What are the two sources of data?

The two sources of data are:

• Primary source
• Secondary source

Mention two sources of secondary data.

The two sources of secondary data are:

• Government publication
• Semi-government publication

In what parameters is the statistical information published in the census of India?

The statistical information is published in the following parameters in the census of India[1] 

• Population projection
• Sex composition of a population
• Density of population
• Size, growth rate, and distribution of people in India

Mention two demerits of indirect oral investigation.

The two demerits of indirect oral investigation are:

• Less accurate
• Doubtful conclusion

The progress report of a railway published by the railway department is what kind of data?

The progress report of a railway published by the railway department is secondary data.

When is a direct personal investigation suitable for primary data collection?

The direct personal investigation method is suitable for collecting primary data only on the following situations:

• When the investigation is confined and less
• When an authentic and accurate information is required
• When the data is to be kept secret
• When the direct contact with information is needed

When are the qualities of a good questionnaire?

A good questionnaire should have the following qualities:

• Less number of questions
• Should be clear
• Proper order of question
• Non-controversial
• Questions related to the topic
• Request for return

Question 10

Why is a pilot survey important?

A pilot survey is essential because of the following:

• It helps in assessing the quality and suitability of questions.
• It evaluates the performance of enumerators.
• It helps in designing a set of rules for the investigator.
• It estimates the time and cost involved in the final survey.

Question 11

What is the universe in statistics?

In statistics, the term universe or population indicates an aggregate of items studied for investigators.

Question 12

Define sample.

Sample is a collection of an item from the population that represents the characteristics of the population.

Question 13

Define the census method.

It is a method of collecting data where each item related to the problem of the investigation is collected.

Question 14

Explain the sample method.

It is a process of collecting data in which the sample of a group of items are examined, and conclusions are drawn on their basis.

Question 15

What do you mean by random sampling?

In this method, every item of the universe has an equal chance of being selected in the sample.

Question 16

What is purposive or deliberate sampling?

It is a sampling method where the investor chooses the sampling items according to his opinion, and it is the best for the population.

Question 17

Define stratified and mixed sampling?

In this method, the universe is divided into two groups having different characteristics, and the items are selected for each group, hence the entire group is represented.

Question 18

Explain systematic sampling.

In systematic sampling, population units are arranged according to the alphabets, numbers, and geography. Here, every n th   numerical item is selected as a sample.

Question 19

What is quota sampling?

Here, the universe is divided into two sections or groups in terms of their characteristics.

Question 20

What is convenience sampling?

In this method, sampling is done according to the investigator’s convenience.

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MCQ Questions For Class 11 Statistics Chapter 2 Collection of Data

Check the below NCERT MCQ Class 11 Economics Chapter 2 Collection of Data with Answers available with PDF free download. MCQ Questions for Class 11 Economics with Answers were prepared based on the latest syllabus and examination pattern issued by CBSE, NCERT and KVS. Our teachers have provided below Collection of Data Class 11 Economics MCQs Questions with answers which will help students to revise and get more marks in exams

Collection of Data Class 11 Economics MCQ Questions with Answers

Refer below for MCQ Class 11 Economics Chapter 2 Collection of Data with solutions. Solve questions and compare with the answers provided below

Question. What kind of data are contained in the census of population and national income estimates, for the government? (A) Primary data (B) Secondary data (C) Internal data (D) None of these 

Question. When the population under study is in finite, sample survey should be used. Choose the most appropriate option from the given below. (A) True (B) False (C) Partially true (D) Incomplete statement 

Question. Indirect oral investigation lacks   A accuracy. Choose the most appropriate option from given below. (A) True (B) False (C) Partially true (D) Incomplete information   

Question. Choose the incorrect pair from the options given below.  C

Codes (a) A –(i) (b) B – (ii) (c) C – (iii) (d) D – (iv)

Question. Quota sampling is type of ……… . (A) judgement sampling (B) random sampling (C) non-random sampling (D) None of the above   

Question. During the Corona outbreak in India, the entire country was locked down initially for 21 days except for essential services. Different news channels are reporting from different parts of the country. This is an example of  (A) indirect oral investigation (B) information received from local correspondents (C) information from government official source (D) None of the above     

Question. Choose the incorrect pair. 

Codes (a) A – (i) (b) B – (ii) (c) C – (iii) (d) D – (iv)

Question. Which of the following statistical errors is/are avoidable? (A) Sampling  (B) Non-sampling (C) Random  (D) All of the above   

Question. The world is facing the covid pandemic even now. During its initial days, government of India conducted tests of citizens on a frequent interval to ensure that virus does not spread to the community. This is an example of which of the following types of survey? (A) Sample survey  (B) Census survey (C) Both (A) and (B)  (D) Descriptive survey 

Question. Which method should be used to collect data where data is sensitive? (A) Indirect oral investigation (B) Information received from local correspondents (C) Information from mailed questionnaire (D) Telephonic conversation   

Question. Data collected fromsecondary sources are  (A) collected with the objective different from the study for which it was primarily used (B) more reliable as compared to primary sources (C) not available in published form (D) All of the above   

Question. In the world of changing consumer presences for various goods and services, which of the following method should be used to collect data by the companies to matchup with the expectations of people? (A) Direct personal investigation (B) Indirect oral investigation (C) Information through local correspondents (D) Any of the above   

Question. Secondary data is available only from external sources. Choose from the options below. (A) True (B) False (C) Partially true (D) Incomplete statement   

Question. An investigator can take help of trained professional to collect which of the following data? (A) Internal Data (B) Primary Data (C) Secondary Data (D) All of these

Question. Under which of the following method, population is divided into small groups and then data is collected at random from each group? (A) Stratified sampling (B) Cluster sampling (C) Judgement sampling (D) None of these   

Question. The method of collecting data which considers all units of the universe is known as ……… . (A) Census method (B) Sample method (C) Both (A) and (D) (D) None of these   

Question. Lottery method is used under (A) random sampling (B) quota sampling (C) purposive sampling (D) judgement sampling   

Question. Data collected on religion from census report is an example of ……… . (A) sample data (B) primary data (C) secondary data (D) Both (A) and (B)   

Question. Which of the following is/are type(s) of non-random sampling? (A) Judgement sampling (B) Convenience sampling (C) Quota sampling (D) All of the above     

Question. Exit polls are an example of ……… method of collecting data. (A) census (B) sampling (C) investigation (D) None of these 

Question. A company tests few bulbs to predict about the life span of bulbs manufactured. It is an example of …… . (A) random sampling (B) judgement sampling (C) convenience sampling (D) None of the above   

Question. In random sampling (A) Cost involved is high (B) Sample is biased (C) Each unit has an equal probability of being selected (D) All of the above   

Question. Which of the following is/are true about census method? (i) Census is suitable in case of both homogeneous and heterogeneous data (ii) Census method conducts an extensive study of population (iii) Census method is non-economical (iv) Census method is useful even with vast area of investigation Choose from the options below. (A) (i) and (iii)  (B) (ii) and (iv) (C) (ii) and (iii)  (D) (iii) and (iv) 

Question. Which of the following is/are type(s) of restricted random sampling method? (A) Stratified sampling (B) Systematic sampling (C) Multi-stage sampling (D) All of the above     

Question. Which is an economic activity? (A) Production (B) Consumption (C) Distribution (D) All of these 

Question. Schedules are filled by the………………………………. (A) Investigator (B) Enumerator (C) Respondent (D) None of these   

Question. In ………………….. Paper slips are made for each item of the universe. (A) Tippet Table (B) Lottery Method (C) Both A and B (D) None of these 

Question. Which of the following is a merit of a good questionnaire? (A) Difficulty (B) Not in proper order (C) Invalid questions (D) Less number of questions   

Question. The first stage of statistical study is ………………………….. (A) Analysis of data (B) Presentation of data (C) Organisation of data (D) Collection of data   

Question. Personal bias is possible under……………………. (A) Random Sampling (B) Purposive Sampling (C) Stratified Sampling (D) Quota Sampling 

Question. Which of the following factors are considered when comparison between sampling and census method is made? (A) Area of survey (B) Accuracy of data (C) Cost of collection (D) All of these 

Question. under which method, chits are taken out to form a sample – (A) Lottery method (B) Tippet’s method (C) Sample method (D) Convenience sampling 

Question. Which of the following methods is used when an investigator collects the required information with the respondent? (A) Direct personal investigation (B) Indirect oral investigation (C) Mailing surveys (D) All of these 

Question. Reliability of sampling data depends on…………………….. (A) Size of sample (B) Method of sampling (C) Training of enumerators (D) All of these 

Question. The process of converting raw material into goods is called ……………. (A) Production (B) Saving (C) Investment (D) Exchange 

Question. Exit Polls is an interesting example of ………………… (A) Haphazard Sampling (B) Stratified Sampling (C) Quota Sampling (D) Random Sampling 

Question. This method involves study of each and every item of the universe – (A) Sample (B) Census (C) Random sampling (D) Quota sampling 

Question. Under random sampling, each item of the universe has ……………..chance of being selected. (A) Equal (B) Unequal (C) Zero (D) None of these 

Case Based MCQ Questions Class 11 Economics Chapter 2 Collection of Data to Economics and Statistics

Direction Read the following case study and answer questions on the basis of the same.

ABC Corporation Limited is a company which produces garments: Mr Viaan, who is the manager of the company, keeps proper record of companies cost and revenue statement. In present time, due to rising competition from  foreign companies as well as changing consumer’s taste and preferences, it has become really difficult for Mr Viaan to maintain ABC Corporation’s profit levels. In order to withstand foreign competition, Mr Viaan decided to conduct a survey to know about changing pattern of consumer’s demand across country. Also, in order to increase profits, it is important for the company to establish itself internationally by matching the demand of international buyer’s as well.

Question. Which of the following survey method should be used to know the changing demand of the buyers? (a) Census method (b) Sample method (c) Personal investigation (d) Either (a) or (b)   

Question. The person who helps the investigator in collecting information is known as ……. (a) Enumerator (b) Respondent (c) Investigator (d) None of these   

Question. Which method of collecting primary data will be most suitable in the above situation? (a) Direct personal investigation (b) Indirect oral investigation (c) Information through local correspondents (d) None of the above     

Question. Mr Viaan keeps proper record of statistical information related to the company. Which of the following source of data is represented in this case? (a) Internal source of data (b) External source of data (c) Primary source of data (d) Secondary source of data   

Question. Consumer’s demand for garments changes regularly. Which of the following method of collecting primary data is most suitable in this situation? (a) Direct personal interview (b) Indirect oral interview (c) Information through local correspondents (d) Telephonic interview   

Question. Investigator choose wrong samples for conducting the survey to know about change in demand trends. This is referred to as ……… error. (a) sampling (b) non-sampling (c) biased (d) Both (a) and (c)    

Question. Assertion (A) Telephonic interviews can be substituted for the situation where information related to changing pattern of demand is required, provided respondents are reluctant to give information.  Reason (R) Statistical information plays a vital role for the companies to keep earning profits. Alternatives (a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A) (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A) (c) Assertion (A) is true, but Reason (R) is false (d) Both are false     

Direction Read the following case study and answer questions on the basis of the same.  You are Rohan Verma, an investigator who wish to conduct a survey to study the smoking behaviour of University students. For this reason, you prepared a questionnaire based upon the objective of the survey and keeping in mind the size of the target group, trained 5 people to complete the survey. Your target group comprised of 1,500 students across 10 different colleges. You followed all methods of statistics to ensure the accuracy of the data.

Question. Which of the following source of data is referred in the above situation? (a) Primary data (b) Secondary data (c) Internal data (d) None of these   

Question. Most important step to be followed after preparing the questionnaire will be … . (a) pre-testing (b) post-testing (c) pilot survey (d) Both (a) and (c)   

Question. Assertion (A) Indirect oral investigation method is less reliable but economical. Reason (R) When information is collected from third party, information should be verified before analysis. Alternatives (a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A) (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A) (c) Assertion (A) is true, but Reason (R) is false (d) Both are false   

Direction Read the following case study and answer questions on the basis of the same. The first and most popular data collection techniques for eliciting idiosyncratic emotion content are structured and semistructured in-depth interviews with open-ended and probing questions activating an athlete’s recall of thoughts and feelings prior to and during best and worst performances. It is usually recommended in pilot and exploratory studies to generate idiosyncratic labels and then to aggregate most selected items into a stimulus list or standardised emotion scale.  Case study research typically includes multiple data collection techniques and data are collected from multiple sources. Data collection techniques include interviews, observations (direct and participant), questionnaires, and relevant documents. The use of multiple data collection techniques and sources strengthens the credibility of outcomes and enables different interpretations and meanings to be included in data analysis. This is known as triangulation.

Question. The method discussed in the case study is a method of ……… . (a) collecting primary data (b) collecting secondary data (c) conducting survey (d) All of the above     

Question. Triangulation refers to (a) multiple data collection techniques and sources to strengthens the credibility of outcomes. (b) enables different interpretations and meanings to be included in data analysis. (c) Both (a) and (b) (d) Neither (a) nor (b)   

Question. Which are the multiple sources of collection of data available? (a) Internal and External (b) Primary and Secondary (c) Both (a) and (b) (d) Neither (a) nor (b)   

Question. Assertion (A) Various methods of quantitative facts ensure credibility of information. Reason (R) Unverified data leads to misleading conclusion and defeat the purpose of study. Alternatives (a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of Assertion (A) (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of Assertion (A) (c) Assertion (A) is true, but Reason (R) is false (d) Both are false   

Question. Open-ended surveys are those which includes ……… . (a) fixed opinions (b) varied opinions (c) Both (a) and (b) (d) Neither (a) nor (b)   

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Class 11th Economics - Organisation of Data Case Study Questions and Answers 2022 - 2023

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Organisation of data case study questions with answer key.

11th Standard CBSE

Final Semester - June 2015

Case Study 

The data collected from primary and secondary sources are raw or unclassified. Once the data are collected the next step is to classify them for further statistical analysis. 'Classification' brings order to raw data which can be classified through the frequency distribution in a comprehensive manner. Once you know the techniques of classification, you can easily construct a frequency distribution, both for the continuous and discrete variable. A continuous variable can take any numerical value, e.g., height, weight etc. whereas a discrete variable can take only certain value, e.g., number of children, number of chairs etc. (a) Explain how does classification of data brings order to raw data. (b) Give an example each of a discrete variable and a continuous variable.

The classification of data as a frequency distribution has an inherent shortcoming. While it summarises raw data making it concise and comprehensible it does not show the datails that are found in raw data. There is loss of information in classifying raw data. Once the data are grouped into classes, an individual observation has no significance in further statistical calculation. This is so because when the data are grouped into classes an individual observation has no significance in further calculation. This is so because when data are grouped as 'classes' all values say in a given class 0-10 are grouped with a frequency of say 6, but not their actual values. All values in this class are assumed to be equal to the middle value of the class interval (i.e., 5). What do you understand by the 'loss of information' in classified data? Explain with the help of an example.

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