Worksheet Solutions: Collection of Data- 1 | Economics Class 11 - Commerce PDF Download

Choose Correct Answer

Q1: Statistics is:
(a) Science
(b) Arts
(c) A and B both
(d) None of these
Ans:  c

Q2: Statistics are:
(a) Aggregate of facts
(b) Numerically expressed
(c) Collected for a pre-deter mind purpose
(d) All of these
Ans: d

Q3: The term statistics was first used by
(a) Gottfried Achenwall
(b) Paul A Samuelson
(c) Lord Robinson
(d) J.(b) Say
Ans: a

Q4: Which of the following is not a function of Statistics?
(a) Economic forecasting
(b) Economic equilibrium
(c) Political equilibrium
(d) Construction of economic models
Ans: c

Q5: For drawing Lottery ____ Sampling is use(d)
(a) Random
(b) Purposive
(c) Stratified
(d) Quota
Ans: a

Q6: Data are collected by the investigator himself:
(a) Secondary
(b) Primary
(c) Both A and B
(d) None of the above
Ans: b

Q7: Frequency is the number of ____ an observation repeats in the series-
(a) Years
(b) Weeks
(c) Days
(d) Times
Ans: d

Q8: 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
Ans: b

Q9: The process of converting raw material into goods is called ____
(a) Production
(b) Saving
(c) Investment
(d) Exchange
Ans: a

Q10: Personal bias is possible under ____
(a) Random Sampling
(b) Purposive Sampling
(c) Stratified Sampling
(d) Quota Sampling
Ans: b

Q11: under which method, chits are taken out to form a sample –
(a) Lottery method
(b) Tippet’s method
(c) Sample method
(d) Convenience sampling
Ans: a

Q12: 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
Ans: b

Assertion And Reasoning Type Questions

Q13: 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.
Ans: a

Q14: 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.
Ans: b

Q15: 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.
Ans: c

Q16: 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.
Ans: b

Q17: 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.
Ans: a

True False

Q1: The average marks scored by Mohan in mathematics is not a statistics.
Ans: True

Q2: Statistical laws are universal.  
Ans: False

Easy type questions

Q1: Name the first step involved in a statistical investigation.
Ans: The first step involved in a statistical investigation is defining the problem or formulating the research question.

Q2: What are the main sources of data?
Ans: The main sources of data are primary sources and secondary sources.

Q3: Define primary data.
Ans: Primary data refers to data that is collected directly from the original source or firsthand by the researcher.

Q4: Give the meaning of secondary data.
Ans: Secondary data refers to data that has already been collected and recorded by someone else for a different purpose but can be used for the current research.

Q5: Mention the methods used for collection of data.
Ans: The methods used for the collection of data include surveys, experiments, observations, and existing records or documents.

Q6: What is interview method?
Ans: Interview method is a data collection technique in which a researcher asks questions directly to individuals or respondents to gather information.

Q7: Define a questionnaire.
Ans: A questionnaire is a structured set of questions used to gather information from respondents in a systematic and standardized manner.

Average type Questions

Q8: State three advantage of direct personal investigation.
Ans: Three advantages of direct personal investigation are:
(a) It allows the researcher to clarify doubts and obtain detailed information.
(b) It provides an opportunity to observe respondents' reactions and body language.
(c) It enables the collection of in-depth and specific data.

Q9: Define sample.
Ans: A sample is a subset of a larger group or population that is selected for the purpose of studying and drawing conclusions about the entire population.

Q10: Define “universe” or “population” in the context of statistics.
Ans: In the context of statistics, "universe" or "population" refers to the entire group or set of individuals or objects that are the subject of the study.

Q11: In which type of data precaution is highly required?
Ans: Precautions are highly required in the case of qualitative or non-numeric data, such as textual data or data that involve subjective interpretations.

Q12: What is meant by “sampling method”?
Ans: "Sampling method" refers to the technique or procedure used to select a representative subset (sample) from a larger population for data collection and analysis.

Higher Order Thinking Skills Questions

Q13: Explain NSSO. What are its functions?
Ans: NSSO stands for the National Sample Survey Office in India. It is a government organization responsible for conducting large-scale sample surveys on various socio-economic aspects of the population. Its functions include collecting, processing, and analyzing data to provide valuable insights into the demographic and economic conditions of the country. NSSO surveys cover topics such as employment, consumer expenditure, agriculture, and more.

Q14: What is deliberate sampling and how it differs from systematic sampling?
Ans: Deliberate sampling is a non-random sampling method where specific elements or individuals are deliberately chosen for inclusion in the sample based on certain criteria. Systematic sampling, on the other hand, is a random sampling method where every nth element is selected from a list. The key difference is that deliberate sampling is not random, while systematic sampling is based on a predetermined pattern.

Q15: Why is sampling method preferred to census method?
Ans: Sampling method is preferred to the census method for several reasons:
(a) It is more cost-effective, as it involves studying a subset of the population rather than the entire population.
(b) It is less time-consuming and can provide results more quickly.
(c) It is often more practical when studying large populations.
(d) It reduces the burden on respondents and makes data collection more manageable.

Q16: State the essential features of a good questionnaire.
Ans: Essential features of a good questionnaire include:
(a) Clarity: Questions should be clear, concise, and easily understood.
(b) Relevance: Questions should be relevant to the research objectives.
(c) Unbiased: Questions should not lead or bias respondents' answers.
(d) Logical Sequence: Questions should follow a logical order.
(e) Standardization: The questionnaire should be consistent for all respondents.
(f) Pilot Testing: It should be pre-tested on a small group to identify and address any issues.