Question: We calculate both variance and standard deviation because: A. Variance is easy to do math with, standard deviation is easy to visualize B. Variance is

We calculate both variance and standard deviation because:

A. Variance is easy to do math with, standard deviation is easy to visualize

B. Variance is more vulnerable to small sample errors

C. One works best with scenario data, the other works best with time series data

D. All answers are correct

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