Tr Jain Vk Ohri 2019 Solutions for Class 11 Science Economics Chapter 2 Collection Of Data are provided here with simple step-by-step explanations. These solutions for Collection Of Data are extremely popular among Class 11 Science students for Economics Collection Of Data Solutions come handy for quickly completing your homework and preparing for exams. All questions and answers from the Tr Jain Vk Ohri 2019 Book of Class 11 Science Economics Chapter 2 are provided here for you for free. You will also love the ad-free experience on Meritnation’s Tr Jain Vk Ohri 2019 Solutions. All Tr Jain Vk Ohri 2019 Solutions for class Class 11 Science Economics are prepared by experts and are 100% accurate.
Page No 27:
You are to conduct direct personal investigation on the quality of teaching in a school. Who are your informants? What difficulties do you expect to encounter in such an exercise?
If we want to know the quality of teaching in a school then our informants will be the students studying in that school.
The difficulties that can be encountered in conducting direct personal investigation are:
i) This method is expensive in terms of the time spent, money and efforts involved.
ii) There exist chances of personal bias on part of students, hence results might not be accurate.
iii) Since the field of investigation is large; thus it will be difficult to approach each and every student of the school.
Page No 29:
You are keen on finding statistical information on available Health Care facilities in your locality comprising 200 families. How would you approach the issue, and which method of investigation would you prefer to adopt? Give reasons.
If we want to collect the data on the health care facilities in our locality, we can go with the indirect oral investigation option. Under this method, the information is not directly collected from the concerned person. It is rather collected from other people or agencies who are likely to have the required information. As it will not be feasible to conduct research on personal basis with 200 families, it will be better to use the data already published by various government, semi- government and reliable private agencies. This will include less cost in terms of time and money involved and we can also seek expert opinion on the same.
Page No 34:
You are studying in a school which is nearly 500 km away from your home town. As a student you are keen to collect statistical information relating to literacy rate in your town. Which mode of data collection will you prefer to adopt? Give reasons in support of your answer.
We can use the indirect investigation method in order to collect the information regarding the literacy rates in our town. Under this we can use the data published by the local government agencies and other reliable non-government agencies.The reason behind choosing this method is that this method will prove less time consuming as well as it is a cheap method of collecting information. Also by using this method we can seek opinion of the experts thereby making this information more reliable.
Page No 44:
Frame five 'two-way' questions and five 'multiple choice' questions relating to a questionnaire that you intend to design for collecting primary data on the Level and Composition of Expenditure of the People in your locality.
Page No 44:
Complete the following observations:
(ii) Sources of secondary data are ____________.
(iii) Primary data are always collected directly from the individuals ____________.
(iv) Pilot survey is conducted to assess ____________.
i) Secondary data is the data collected by other persons. That is, secondary data is collected by an individual or a group of individuals or any agency in the past for their own purpose but later on used by some other party for some other or same purpose. If the data is collected on a special request then it will be treated as primary data rather than secondary data.
ii) Sources of secondary data are government publications, semi-government publications and private publications. Data collected from such sources are not original as they have not been collected directly by the investigator rather they had been collected by someone else in the past. The secondary sources of data can be in published or unpublished form.
iii) Primary data are always collected directly from the individuals who constitute the universe of study. Primary data means collecting data directly from the actual source of information.
iv) Pilot survey is conducted to assess the quality of questionnaire. Pilot survey are conducted before the final statistical investigation is done. It is a form of pre-testing of the questionnaire on a small sample of the universe that helps in judging the quality of the questionnaire and accordingly, getting to know if any modifications are required in it before the final survey takes place.
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