```{include} /../core/dataserver/attribute/introducing_tstochastic_attribute/inv_gamma_equation.md
```

The mean value of the Inverse-Gamma law can then be computed as $\mu = \beta/(\alpha-1) + \xi$
(for $\alpha > 1$) while its variance can be written as $\sigma^2=\dfrac{\beta^2}{(\alpha-1)^{2}
(\alpha-2)}$ (for $\alpha > 2$).

```{include} /../core/dataserver/attribute/introducing_tstochastic_attribute/inv_gamma_figure.md
```