# What are the variance and standard deviation of {8, 29, 57, 3, 8, 95, 7, 37, 5, 8}?

##### 1 Answer

#### Explanation:

The variance is a sort of mean measure of the variation of the data about the line of best fit.

It is derived from:

Where

This equation, with a bit of manipulation end up as:

'~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Rather than building a table of values I used a calculator to do the work for me:

becomes: