#### Chapters

Chapter 2: Collection of Data

Chapter 3: Organisation of Data

Chapter 4: Presentation of Data

Chapter 5: Measures of Central Tendency

Chapter 6: Measures of Dispersion

Chapter 7: Correlation

Chapter 8: Index Numbers

Chapter 9: Use of Statistical Tools

## Chapter 2: Collection of Data

### NCERT solutions for Economics - Statistics for Economics Class 11 Chapter 2 Collection of DataExercise [Pages 20 - 21]

Frame at least four appropriate multiple-choice options for following question:

Which of the following is the most important when you buy a new dress?

Frame at least four appropriate multiple-choice options for the following question:

How often do you use computers?

Frame at least four appropriate multiple-choice options for the following question:

Which of the following newspapers do you read regularly?

Frame at least four appropriate multiple-choice options for the following question:

Rise in the price of petrol is justified.

Frame at least four appropriate multiple-choice options for the following question:

What is the monthly income of your family?

Frame five two-way questions (with ‘Yes’ or ‘No’).

#### State whether the following statements are True or False.

There are many sources of data.

True

False

A telephone survey is the most suitable method of collecting data when the population is literate and spread over a large area.

True

False

Data collected by an investigator is called secondary data.

True

False

There is a certain bias involved in the non-random selection of samples.

True

False

Non-sampling errors can be minimized by taking large samples.

True

False

**What do you think about the following question? Do you find any problem with this question? Describe.**

How far do you live from the closest market?

**What do you think about the following question? Do you find any problem with this question? Describe.**

If plastic bags are only 5 percent of our garbage, should they be banned?

**What do you think about the following question? Do you find any problem with this question? Describe.**

Wouldn’t you be opposed to an increase in the price of petrol?

**What do you think about the following questions? Do you find any problem with these questions? Describe.**

- Do you agree with the use of chemical fertilizers?
- Do you use fertilizers in your fields?
- What is the yield per hectare in your field?

You want to do research on the popularity of Vegetable Atta Noodles among children. Design a suitable questionnaire for collecting this information.

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. What is the population and the sample size?

Give two examples each of sample, population and variable.

Which of the following methods give better results and why?

Census

Sample

Which of the following errors is more serious and why?

Sampling error

Non-Sampling error

Suppose there are 10 students in your class. You want to select three out of them. How many samples are possible?

Discuss how you would use the lottery method to select 3 students out of 10 in your class?

Does the lottery method always give you a random sample? Explain.

Explain the procedure of selecting a random sample of 3 students out of 10 in your class, by using random number tables.

Do samples provide better results than surveys? Give reasons for your answer.

## Chapter 2: Collection of Data

## NCERT solutions for Economics - Statistics for Economics Class 11 chapter 2 - Collection of Data

NCERT solutions for Economics - Statistics for Economics Class 11 chapter 2 (Collection of Data) include all questions with solution and detail explanation. This will clear students doubts about any question and improve application skills while preparing for board exams. The detailed, step-by-step solutions will help you understand the concepts better and clear your confusions, if any. Shaalaa.com has the CBSE Economics - Statistics for Economics Class 11 solutions in a manner that help students grasp basic concepts better and faster.

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Concepts covered in Economics - Statistics for Economics Class 11 chapter 2 Collection of Data are Collection of Data, Sources of Data - Primary, Sources of Data - Secondary, Concepts of Sampling, How Basic Data is Collected, Methods of Collecting Data, Some Important Sources of Secondary Data, Organisation of Data, Meaning of Variables, Types of Variables, Organisation of Data - Raw Data, Organisation of Data - Frequency Series, Organisation of Data - Frequency Distribution, Tabular Presentation and Diagrammatic Presentation of Data - Geometric Form, Tabular Presentation and Diagrammatic Presentation of Data - Frequency Diagrams, Abular Presentation and Diagrammatic Presentation of Data - Arithmetic Line Graphs, Introduction to Collection of Data, What Are the Sources of Data?, How Do We Collect the Data?, Census and Sample Surveys, Sampling and Non-sampling Errors, Census of India and NSSO, Collection of Data - Conclusion.

Using NCERT Class 11 solutions Collection of Data exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. The questions involved in NCERT Solutions are important questions that can be asked in the final exam. Maximum students of CBSE Class 11 prefer NCERT Textbook Solutions to score more in exam.

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