Which method of collecting primary data is most suitable when the field of investigation is highly confidential and restricted? MCQ with Answer and Explanation

Which method of collecting primary data is most suitable when the field of investigation is highly confidential and restricted?

A. Information through local correspondents

B. Direct personal interview

C. Mailed questionnaire method

D. Indirect oral investigation

Answer: Option B

Direct personal interview ensures maximum confidentiality as the investigator directly collects data without intermediaries.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

The data collected from the website of the Ministry of Statistics and Programme Implementation is an example of:

A. Raw data

B. Primary data

C. Secondary data

D. Experimental data

Correct Answer: Option C

Explanation:
It is data already compiled and published by an official agency.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

If A and B are independent, then P(A|B) equals:

A. P(B)

B. P(A∩B)

C. P(A)

D. P(A) + P(B)

Correct Answer: Option C

Explanation:
Independence means the occurrence of B does not affect the probability of A.

This question belongs to: Accountancy and Statistics Statistics

Question #3 Report Error

For a frequency distribution with classes 0-10, 10-20, 20-30, the class mark of the second class is:

A. 10

B. 20

C. 25

D. 15

Correct Answer: Option D

Explanation:
Midpoint = (10+20)/2 = 15.

This question belongs to: Accountancy and Statistics Statistics