Question

Find the standard deviation of the data set below. Round your answer to three decimal places.

3, 5, 7, 7, 9, 11, 12, 13, 15, 17, 18, 19, 19, 19

Answer 1

need to find the mean

Answer 2

\[sd=\frac{\sum(x-\mu)^2}{n}\]

Answer 3

where the u thing is the mean .... doesnt really matter if you subtract x from mean or mean from x; the squaring turns it all positive in the end