Alternative Equation Formats

The equation on this page is available in multiple formats. Depending on your browser, some formats might not render correctly.

MathML

a = \sqrt{\frac{1}{Q_{N} - 1} Σ_{q = 1}^{Q} {(r_{q} - \bar{r})}^{2}}

MathML rendered as SVG

$eh equals . square root of fraction 1 , over q sub n , minus 1 end fraction . cap sigma with q equals 1 below and with q above . open , r sub q , minus , r with macron above , close squared end root$

Last updated: March 16, 2026