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The relation between coefficient of variation (CV) and coefficient of dispersion based on standard deviation

The relation between coefficient of variation (CV) and coefficient of dispersion based on standard deviation Correct Answer CV = 100 × σ/x̅ 

Explanation

Coefficient of variation = (σ/x̅) × 100

∴ The answer is option (2)

Example

The students obtained marks out of 100 are - 5, 10, 25, 40.Its standard deviation is

⇒ Mean (x̅) = (5 + 10 + 25 + 40)/4 = 20

⇒ Standard deviation = √1/4

⇒ √1/4

⇒ √1/4

⇒ √1/4(750)

Variance = square of standard deviation

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