Question

If the variance of the data values in a population is 324, what is the standard deviation of the data values?

A. 14
B. 12
C. 16
D. 18

Answer 1

im so lost any help on how to solve it?

Answer 2

The standard deviation is simply the square root of the variance:
\[\sigma_x = \sqrt{<x^2> - <x>^2} \text{ where the variance is: } <x^2> - <x>^2\]

Answer 3

So take the square root of 324...