# The following res

Mean wages of both the factories are the same, i.e., Rs. 5300.

To compare variation, we need to find out the coefficient of variation (CV).

We know, CV = , where SD is the standard deviation.

The variance of factory A is 100 and the variance of factory B is 81.

Now, SD of factory A =

And, SD of factory B =

Therefore,

The CV of factory A =

The CV of factory B =

Here, the CV of factory A is greater than the CV of factory B.

Hence, factory A has more variation.

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