Question

What is the variance of {-5, 9, 7, 4, -15, 7, 18, -2}?

Answer 1

The variance is 88.36.

Explanation:

Mean: `2.875`

Variance: `((-5-2.875)^2+(9-2.875)^2+(7-2.875)^2+(4-2.875)^2+(-15-2.875)^2+(7-2.875)^2+(18-2.875)^2+(-2-2.875)^2)/(8)~~88.36`