Question

Why is the standard deviation used more frequently than the? variance? choose the correct answer below.

a. the units of variance are squared. its units are meaningless.
b. the standard deviation is easier to compute.
c. the standard deviation requires less entries from the data set?

Answer 1

Option A

Explanation:

Given are 3 options to check why standard deviation is more used than variance.

Variance is the average of square of deviations from the mean.

Std deviation is frequently used because for normal distribution std deviations give a measure about probability.

Hence option a is right.

a. the units of variance are squared. its units are meaningless

Answer 2

I think the correct answer would be A. The standard deviation is used than the variance because the units of variance are squared units. It does not say anything or is meaningless while standard deviation has the same units as the mean which is a measure of central tendency.