First slide

Introduction to statistics

Question

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

Moderate

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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