Question

If the average of a series of values is 10 and their variance is 4, then the coef
variance is
(B) 0.4
(A) 0.2
(C) 2.5
(D) 4.0
​

Answer 1

Answer:

0.4

Step-by-step explanation:

becausr variance of 10 and 4 is 0.4

Answer 2

Answer:

The coefficient of variance is 0.2

Step-by-step explanation:

Given that mean = 10

variance = 4

We need to find the coefficient of variance.

We know that coefficient of variance = $\frac{Standard deviation}{Mean}$

We also know that standard deviation = $\sqrt{Variance}$

=> standard deviation = $\sqrt{4}$

                                    = 2

Therefore, substituting the value in the above formula, we get,

coefficient of variance = $\frac{2}{10}$

                                      = 0.2

Therefore, the coefficient of variance is 0.2