The following data values represents a population. what is the variance of the values? 6, 10, 14, 2

First we find the mean (average)
(6 + 10 + 14 + 2) / 4 = 32/4 = 8

now subtract the mean value from every data valueand square it.
6 - 8 = -2-2^2 = 4
10 - 8 = 22^2 = 4
14 - 8 = 6...6^2 = 36
2 - 8 = -6...-6^2 = 36

now find the mean of those numbers
(4 + 4 + 36 + 36) / 4 = 80/4 = 20 <== ur variance