PLEASE HELP ME W THIS

Question

Find the standard deviation for the set of data.

{27, 14, 7, 21, 19, 23, 26, 30, 4}

A. 6.31

B. 8.49

C. 6.39

D. 7.09

Answer 1

If you are calculating it as the standard deviation of the population, the formula for the variance is:

and standard deviation is the square root = 8.49 (B), where the mean is 19 and N = 9..