What is the variance of the following numbers?: {8,0,9,5,3,4,5,3,7,-5,3,6,8,4,3,}

Variance $= 11.49$
${\sigma}^{2} = \frac{{\left(x - \overline{x}\right)}^{2}}{n} = \frac{172.4}{15} = 11.49$