Question

Find the standard deviation of: 1.2, 3, 4, 1.2, 3.2, 4.1, 1.2, 9, 6, 1.2, 4.5 WILL MEDAL

Answer 1

its a process, find the mean

subtract the mean from all the data points

square the results and add them up, then divide by 1 less then the number of actual data points.

Answer 2

then sqrt it

Answer 3

\[s=\sqrt{\frac{\sum(x-\mu)^2}{n-1}}\]