User:LiteralKa/Math

Standard Deviation
$$ \begin{array}{lcl} \sqrt{\frac{\Sigma(\alpha_i-\mu) ^2}{n}}\\ \\ \mbox{where}~\mu\ \mbox{is the mean}\\ \alpha_i\ \mbox{is each number in the data set}\\ n\ \mbox{is the number of points}\\ \end{array} $$