The sum of 20 observations is 300 and its sum of squares is 5000 and mean is 15. Find the coefficient of variation

The Coefficient of variation is 20%

We know that coefficient of variation (CV) is computed as :

CV = (SD / Mean) * 100

But

Standard deviation (SD)

=

=

= 4

Mean = 20

Hence,

CV = (4 / 20) * 100

CV = 0.2 * 100

CV = 20

Therefore, Coefficient of variation is 20%

Learn more about coefficient of variation here : link

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