Question 1

What is the primary source of data called when it is collected for the first time by the investigator?

Accepted Answer

Primary data refers to the data collected for the first time by the investigator himself or herself. It is original in character and is collected for a specific research objective.

Question 2

Which of the following is a method of collecting primary data?

Accepted Answer

Direct personal investigation is a primary data collection method where the investigator establishes direct contact with the respondents.

Question 3

Data collected from published reports and journals are known as:

Accepted Answer

Secondary data are data that have already been collected and processed by someone else, such as in published reports, books, and journals.

Question 4

In which method of data collection are questionnaires sent to respondents through mail?

Accepted Answer

Mailing questionnaire method involves sending questionnaires via post to respondents, who fill them out and return them.

Question 5

A complete enumeration of each and every unit of the population is known as:

Accepted Answer

Census is a complete enumeration of all units in the population or universe, providing detailed data about every individual element.

Collection of Data — MP Board Class 11 Economics Important Questions & Revision Notes