CMA Final · Strategic Cost Management · Introduction to Tools for Data Analytics
For a data set, the mean is ₹ 200 and the standard deviation is ₹ 30. What is the coefficient of variation?
The coefficient of variation is 15 percent, found by dividing the standard deviation of 30 by the mean of 200 and multiplying by 100. It expresses dispersion relative to the average, allowing comparison across data sets.
- A6.67%
- B15%Correct
- C30%
- D20%
Explanation
Coefficient of variation = standard deviation / mean × 100 = 30/200 × 100 = 15%. Option 6.67% inverts the ratio (200/30 style), and 30% ignores the mean.
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