NCERT Class 11 Statistics for Economics Chapter 2 Collection of Data Extra Questions and Answers
Class 11 Statistics for Economics Chapter 2 Extra Inside Questions and Answers – Collection of Data. Here in this Page Class XI Students can Learn Extra Questions & Answer 2nd Chapter Statistics for Economics fully Inside.
We Provided Here Collection of Data Statistics for Economics Chapter 2 Long Answer Type Question, MCQ Questions & Answer, Short Answer Type Questions (2 or 3 marks), and Very Short answer Type Question (1 marks) Solution.
Class 11 Statistics for Economics Chapter 2 Inside based Question
Statistics for Economics Chapter 2 Collection of Data Class 11 Inside 5 Marks, 3 marks, 2 Marks & And 1 Marks Important Questions and Answers.
1.) What are the sources of data?
Ans – Statistical data can be collected from two sources. The researcher may collect the data by conducting an enquiry. Such data are called Primary Data, as they are collected first time. For example if you want to know about the popularity of a Film star among school students. To find this, you will have to enquire from a large number of school students, by asking questions from them to collect the desired information. The data you get, is an example of primary data. If the data have been collected and processed by some other agency, they are called Secondary Data. They can be obtained either from published sources such as government reports, documents ,newspapers, books written by economists or from any other source, for example, a website.
2.) Which points should be kept in mind while preparation of questionnaire/interview schedule.
Ans – While preparing the questionnaire schedule, you should keep in mind the following points;
I.) The questionnaire should not be too long. The number of questions should be as minimum as possible.
ii.) The questionnaire should be easy to understand and avoid ambiguous or difficult words.
iii.) The questions should be arranged in an order such that the person answering should feel comfortable.
iv.) The series of questions should move from general to specific. The questionnaire should start from general questions and proceed to more specific ones.
3.) Explain the ways of collection of data.
Ans – There are basic three ways of collecting data:
(i) Personal Interviews.
(ii) Mailing (questionnaire) Surveys.
(iii) Telephone Interviews.
I.) Personal Interviews – This method is used when the researcher has access to all the members. The researcher conducts face- to-face interviews with the respondents.
ii.) Mailing Questionnaire- When the data in a survey are collected by mail, the questionnaire is sent to each individual by mail with a request to complete and return it by a given date. iii. Telephone Interviews In a telephone interview, the investigator asks questions over the telephone.
4.) Explain why person interview will be preferred and demerits.
Ans – There are many reason to preferred Personal interviews . Personal contact is made between the respondent and the interviewer. The interviewer has the opportunity of explaining the study and answering the queries of respondents. The interviewer can request the respondent to expand on answers that are particularly important. In personal interview there can be avoid Misinterpretation and misunderstanding . Watching the reactions of respondents can provide supplementary information. But this method have some demerits such as ,this method is so expensive ,because it requires trained interviewers. It takes longer time to complete the survey. Presence of the researcher may inhibit respondents from saying what they really think.
5.) Explain the advantages and disadvantages of the mailed Questionnaire
Ans – When the data in a survey are collected by mail, the questionnaire is sent to each individual by mail with a request to complete and return it back with a given date. The advantages of this method , this method is less expensive. It allows the researcher to have access to people in remote areas too, who might be difficult to reach in person or by telephone. It does not allow influencing of the respondents by the interviewer. It also permits the respondents to take sufficient time to give thoughtful answers to the questions. The disadvantages of mail survey are that there is less opportunity to provide assistance in clarifying instructions, so there is a possibility of misunderstanding the questions. This method has low response rate due to some factors , such as returning the questionnaire without completing it, not returning the questionnaire at all, loss of questionnaire in the mail itself, etc.
6.) Explain the advantages and disadvantages of telephone Interviews.
Ans – In a telephone interview, the investigator asks questions over the telephone. The advantages of telephone interviews are that they are cheaper than personal interviews and can be conducted in a shorter time. This method allow the researcher to assist the respondent by clarifying the questions. Telephonic interview is better in cases where the respondents are reluctant to answer certain questions in personal interviews. The disadvantage of this method is access to people, as many people may not own telephones.
7.) Explain the Pilot Survey?
Ans – Once the questionnaire is ready, it is advisable to conduct a try-out with a small group which is known as Pilot Survey of the questionnaire. The pilot survey helps in providing a preliminary idea about the survey. It helps in pre-testing of the questionnaire, so that to know there is any shortcomings and drawbacks of the questions. Pilot survey also helps in assessing the suitability of questions, clarity of instructions, performance of enumerators and the cost and time involved in the actual survey.
In case you are missed :- Previous Chapter Extra Questions
8.) Why the sample survey is preferred?
Ans – Most of the surveys are sample surveys. These are many reason due to it well be preferred in statistics . A sample can provide reasonably reliable and accurate information at a lower cost and shorter time. As samples are smaller than population, it gives more detailed information can be collected by conducting intensive enquiries. As we need a smaller team of enumerators, it is easier to train them and supervise their work more effectively.
MCQ
1.) The data is collected by first hand is an.
(a) Primary data
(b) secondary data
(c) Both (a) and (b)
(d)None of the above
Ans – option (a)
2.) If the data have been collected and processed by some other agency, they are called …….
(a) Primary data
(b) secondary data
(c) Both ( a) and (b)
(d)None of the above
Ans – option (b)
3) ………is a method of gathering information from individuals.
(a) survey
(b) primary data
(c) secondary data
(d)None of the above
Ans – option (a)
4.) When there are only two possible answers, ‘yes’ or ‘no’, it is called …
(a) one way question
(b) two-way question
(c) Three way question
(d)Multiple way question
Ans – option (b)
5.) A survey, which includes every element of the population, is known as
(a) Census
(b)the Method of Complete Enumeration.
(c) Both (a) and (b)
(d) None of the above
Ans – option (c)
6.) There are two main types of sampling
(a)random
(b)non-random.
(c) Both (a) and (b)
(d) None of the above
Ans – option (c)
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