an class="math inline">\(\beta \in \mathbb{R}^+\)</span>, then for <span class="math inline">\(y
\in \mathbb{R}^+\)</span>, <span class="math display">\[\begin{equation*} \text{InvGamma}(y|\alpha,\beta) =
\frac{\beta^{\alpha}}      {\Gamma(\alpha)} \ y^{-(\alpha + 1)} \,
\exp \! \left( \! - \beta \, \frac{1}{y} \right) . \end{equation*}\]</span></p>
</section>
<section id="sampling-statement-6" class="level3">
<h3 class="anchored" data-anchor-id="sampling-statement-6">Sampling statement</h3>
<p><code>y ~</c