Question

What is the standard deviation of the following data set?

{14, 26, 40,52}
Your answer:
N
11.12
13.78
15.6
14.32

Answer 1

D. 14.32

Explanation:

The formula for standard deviation is:

`SD = \sqrt x-\mu`

The mean μ is 33.

The (x minus μ) squared are 361, 49, 49, 361 respectively.

So that the SD =
`\sqrt{(820)/(4)} \approx 14.31782...`