Question

In the data set below, what is the variance?

3 5 8 1 5 8 5


If the answer is a decimal, round it to the nearest tenth.

variance (σ2):

Answer 1

5.42...find the average and then the difference of each term. Square the terms and then average it

Answer 2

\[\sigma^2 = \frac{\sum_{i=1}^{N}(x_{i}-\mu)^2}{N}\] This is the general equation