If a dataset has a mean of 100 and a coefficient of variation of 20%, the standard deviation is: MCQ with Answer and Explanation

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If a dataset has a mean of 100 and a coefficient of variation of 20%, the standard deviation is:

A. 20

B. 30

C. 40

D. 10

Answer: Option A

Solution (By JKSSB Mock Tests)

Coefficient of variation (CV) = (SD / Mean) × 100. So 20 = (SD / 100) × 100 → SD = 20. CV standardizes dispersion relative to the mean.

This question belongs to: Accountancy and Statistics Statistics

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