For two attributes A and B, independence (no association) implies: MCQ with Answer and Explanation

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For two attributes A and B, independence (no association) implies:

A. (AB) = (A) + (B)

B. (AB) = 0

C. (AB) = (A)(B)/N²

D. (AB)/N = (A)/N × (B)/N

Answer: Option D

Solution (By JKExamLibrary)

Independence means the proportion of items with both attributes equals the product of the individual proportions.

This question belongs to: Accountancy and Statistics Statistics

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Question #1 Report Error

The value that appears maximum number of times in a data set is called:

A. Mean

B. Range

C. Median

D. Mode

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Correct Answer: Option D

Explanation:
Mode is the most frequent value.

This question belongs to: Accountancy and Statistics Statistics

Question #2 Report Error

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

A. Reviewing literature

B. Observation method

C. Referring to old records

D. Using internet databases

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Correct Answer: Option B

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Observation involves directly watching and recording behaviors.

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Question #3 Report Error

The weighted harmonic mean of values 2 and 3 with weights 3 and 2 respectively is:

A. 2.8

B. 2.31

C. 2.5

D. 2.4

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Correct Answer: Option B

Explanation:
Weighted HM = (Σw) / Σ(w/x) = 5 / (3/2 + 2/3) = 5 / (1.5 + 0.6667) = 5/2.1667 ≈ 2.3077.

This question belongs to: Accountancy and Statistics Statistics

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