Template:Aw standard deviation

The Standard Deviation
The standard deviation, $${{\sigma }_{T}},$$ of the 2-parameter Weibull is given by:


 * $${{\sigma }_{T}}=\eta \cdot \sqrt{\Gamma \left( \frac{2}{\beta }+1 \right)-\Gamma {{\left( \frac{1}{\beta }+1 \right)}^{2}}}$$