A study records literacy (A) and employment (B) in a population of 1000. Given (A)=600, (B)=700, (AB)=450. The coefficient of association suggests: MCQ with Answer and Explanation

Question

A study records literacy (A) and employment (B) in a population of 1000. Given (A)=600, (B)=700, (AB)=450. The coefficient of association suggests:

A. No association (independence)

B. Positive association

C. Perfect positive association

D. Negative association

Answer: Option B

Solution (By JKSSB Mock Tests)

Expected (AB) under independence = (600×700)/1000 = 420. Observed (AB)=450 > 420, indicating positive association. Yule's Q = [(450×150) - (150×250)] / [(450×150) + (150×250)] = (67500-37500)/(67500+37500)=30000/105000≈0.286, confirming positive but not perfect association.

This question belongs to: Accountancy and Statistics Statistics

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Question #1

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Which of the following is an example of primary data?

A. Data from Census of India 2011 used by a researcher

B. Data collected through a survey questionnaire for a specific study

C. Data extracted from WHO reports

D. Data from RBI bulletin on inflation

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Correct Answer: Option B

Explanation:
Primary data is original data collected firsthand for a specific purpose; a survey questionnaire is a primary source. The other options are secondary data.

This question belongs to: Accountancy and Statistics Statistics