CBSE Class 11 Economics Collection Of Data Worksheet

Collection of Data

Easy type questions(1 mark each)

1) Name thefirst step involved in a statistical investigation.

2) What are the main sources of data?

3) Define primary data.

4) Give the meaning of secondary data.

5) Mention the methods used for collection of data.

6) What is interview method?

7) Define a questionnaire.

Average type questions(3 -4 marks)

8) State three advantage of direct personal investigation.

9) Define sample.

10) Define “universe” or “population” in the context of statistics.

11) In which type of data precaution is highly required?

12) What is meant by “sampling method”?

Higher Order Thinking Skills Questions: (6 marks)

13) Explain NSSO. What are its functions?

14) What is deliberate sampling and how it differs from systematic sampling?

15) Why is sampling method preferred to census method?

16) State the essential features of a good questionnaire.

Case Study Questions Collection of data Class 11 Economics  

Statistics does not recognise individual items. Consider the statement, “the weight of Mr X in the college is 70 KG”. This statement does not constitute statistical data. Statistical methods are not going to investigate anything about this statement. Whereas, if the weights of all the students of the college are given, statistical methods may be applied to analyse that data. Statistics is both a science and an art. It is systematic and finds applications in studying problems in economics, business, astronomy, physics, medicine etc. Statistical methods are sophisticated in nature. Everyone is not expected to possess the intelligence required to understand and to apply these methods to practical problems. This is the job of an expert, who is well-versed with statistical methods.

Choose correct answer:

Question: Statistics is:
(a) Science
(b) Arts
(c) A and B both
(d) None of these 

Answer:  C

Question: Statistics are:
(a) Aggregate of facts
(b) Numerically expressed
(c) Collected for a pre-deter mind purpose
(d) All of these 

Answer: D

Question: The term statistics was first used by
(a) Gottfried Achenwall
(b) Paul A Samuelson
(c) Lord Robinson
(d) J.(b) Say
Answer: A

Question: Which of the following is not a function of Statistics?
(a). Economic forecasting
(b). Economic equilibrium
(c). Political equilibrium
(d). Construction of economic models
Answer: C

Question: For drawing Lottery ……………….. Sampling is use(d)
(a). Random
(b). Purposive
(c). Stratified
(d). Quota
Answer: A

Question: Data are collected by the investigator himself:
(a) Secondary
(b) Primary
(c) Both A and B
(d) None of the above
Answer: B

Question: Frequency is the number of --------an observation repeats in the series-
(a) Years
(b) Weeks
(c) Days
(d) Times
Answer: D

Question: In Plural sense, which of the following is not a characteristic of Statistics?
(a). Aggregate of Data
(b). Only expressed in words
(c). Affected by multiplicity of causes
(d). Collected in a systematic manner
Answer: B

Question: The process of converting raw material into goods is called …………….
(a). Production
(b). Saving
(c). Investment
(d). Exchange
Answer: A

Question: Personal bias is possible under…………………….
(a). Random Sampling
(b). Purposive Sampling
(c). Stratified Sampling
(d). Quota Sampling
Answer: B

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
Answer: A

Question: Which of the following statement is incorrect?
(a). Resources have alternative uses
(b). All numbers are Statistics
(c). Macroeconomics studies large aggregates
(d). Statistics studies only the aggregates of quantitative facts
Answer: B

Question: The average marks scored by Mohan in mathematics is not a statistics. 
Answer: True

Question: Statistical laws are universal.  
Answer: Fals

ASSERTION AND REASONING TYPE QUESTIONS

Question: Assertion (A) Descriptive statistic refers to those methods which are used for the collection, presentation as well as analysis of data.
Reason (R) these methods relate to such estimations as a measurement of central tendencies, measurement of dispersion, measurement of correlation etc.
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 and Reason (R) is not the correct explanation of assertion (A)
C. Assertion (A) is true but Reason (R) is false.
D. Assertion (A) is false but Reason (R) is true.
Answer: A

Question: Assertion (A) Statistics deals with the collection, and analysis, interpretation and presentation of numerical data.
Reason (R) Statistics is the study of numbers relating to selected facts in a systematic form.
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 and Reason (R) is not the correct explanation of assertion (A)
C. Assertion (A) is true but Reason (R) is false.
D. Assertion (A) is false but Reason (R) is true.
Answer: B

Question: Assertion (A) Statistics helps to a establish cause and effect relationship between different economic variables that have facilitated the construction of economic theories.
Reason (R) In order to understand conclusions derived using statistics precisely, it is not necessary that the circumstances and conditions under which this conclusions have been drawn are also studied.
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 and Reason (R) is not the correct explanation of assertion (A)
C. Assertion (A) is true but Reason (R) is false.
D. Assertion (A) is false but Reason (R) is true.
Answer: C

Question: Assertion (A) Statistics is a delicate science and can be easily misused by an unscrupulous person. So data must be used with a caution.
Reason (R) the statistical methods do not study the nature of phenomenon which cannot be expressed in quantitative terms.
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 and Reason (R) is not the correct explanation of assertion (A)
C. Assertion (A) is true but Reason (R) is false.
D. Assertion (A) is false but Reason (R) is true.
Answer: B

Question: Assertion (A) statistics also helps in condensing mass data into a few numerical measures such as mean, variance etc.
Reason (R) these numerical measures help to summaries data.
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 and Reason (R) is not the correct explanation of assertion (A)
C. Assertion (A) is true but Reason (R) is false.
D. Assertion (A) is false but Reason (R) is true.
Answer: A

Question. Write the meaning of population in statistics.
Answer: In statistics population or universe simply refers to an aggregate of items to be studied for an investigation.

Question. Expand NSSO.
Answer: National sample survey organisation.

Question. What is sampling error?
Answer: sampling error is the difference between the result of studying a sample and the result of the census of the whole population.

Question. What do you mean by primary data?
Answer: Primary data are original data which are collected by investigator himself or by enumerates deployed by the investigator for specified purpose.

Question. Write the name of statistical method which is less expensive and time saving.
Answer: Sampling survey.

Q1. Define primary data & secondary data. Give 3 point difference between them.

Q2. Mention two sources of secondary data.

Q3. Name two agencies at the national level which collect, process and tabulate the statistical data.

Q4. Define the terms: (i) Investigator (ii)Enumerator and (iii) Repondent.

Q5. Explain telephone interview method of collecting primary data.

Q6. Compare Direct and Indirect personal interview methods.

Q7. State the advantages and disadvantages of questionnaire with enumerator method and mailed questionnaire method of collecting primary data.

Q8. What are the qualities of a good questionnaire?

Q9. Write a note on Census of India.

Q10. When was NSS constituted?

Q11.What are the functions of NSSO?

Q12 Name the journal published by NSSO.

Q 13 Who is a correspondent?What are the merits and demerits of using them in collecting data.

Q1. Define primary data.

Q2. Define Secondary data.

Q3. State one point of difference between data and secondary data.

Q4. State any tow methods of collecting primary data.

Q5. Mention two sources of secondary data.

Q6. Name two agencies at the national level which collect, process and tabulate the statistical data.

Q7. What kind of data is continued in Census of India?

Q8. What kind of data is contained in NSSO?

Q9. Mention two precautions to be taken while using secondary data.

Q10. What does population or universe in statistics mean?

Q11. What do sample in statistics mean?

Q12. Define census method.

Q13. Define sample method.

Q14. State one point of different between census method and sample method.

Q16. Which method of date collection (census or sample) would you use to check the quality or rice?

Q17. Which method of data collection (Sample or census) is used for the estimation of population in India?

Q18. Define Sampling.