# The sum and the s

To find the more variable, we again need to compare the coefficients of variation (CV).

Here the number of products are n = 50 for length and weight both.

For length,

Mean =

Variance =

=

=

=

So, standard deviation, SD =

Therefore, the coefficient of variation of length,

CVL =

For weight,

Mean =

Variance =

=

=

=

So, standard deviation, SD =

Therefore, the coefficient of variation of length,

CVW =

Now, CVW > CVL

Therefore, the weight is more variable than height.

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