# What is the variance of the following numbers?: {3,5,2,2,4,7,8,5,7,12,6,4,}

$7.4097$
$\overline{x} = \frac{65}{12} = 5.4167$
$V \left(X\right) = \frac{\sum {x}^{2}}{n} - {\overline{x}}^{2}$
$= \frac{441}{12} - {\left(\frac{65}{12}\right)}^{2} = \frac{1067}{144} = 7.4097$