For a dataset of 10 numbers, Σx = 500 and Σx² = 26000. The coefficient of variation (%) is: MCQ with Answer and Explanation

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For a dataset of 10 numbers, Σx = 500 and Σx² = 26000. The coefficient of variation (%) is:

A. 15

B. 20

C. 10

D. 25

Answer: Option B

Solution (By JKSSB Mock Tests)

Mean=50. Variance = (26000/10) - 50² = 2600-2500=100. SD=10. CV = (10/50)×100 = 20%.

This question belongs to: Accountancy and Statistics Statistics

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