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

A
4
B
1/4
C
25
D
12.5

Solution:

We know that

Coefficient of variation $= \frac{σ}{\bar{X}} \times 100 = \frac{7}{28} \times 100 = 25$

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