Ina series of observations, S.D. a 7 and mean is 28, the coefficient of variation is

# Ina series of observations, S.D. a 7 and mean is 28, the coefficient of variation is

1. A

4

2. B

1/4

3. C

25

4. D

12.5

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### Solution:

We know that

Coefficient of variation $=\frac{\sigma }{\overline{X}}×100=\frac{7}{28}×100=25$

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