ink" data-scroll-target="#stan-functions">Stan functions</a></li>
  </ul></li>
  <li><a href="#beta-proportion-distribution" id="toc-beta-proportion-distribution" class="nav-link" data-scroll-target="#beta-proportion-distribution">Beta proportion distribution</a>
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  <li><a href="#probability-density-function-1" id="toc-probability-density-function-1" class="nav-link" data-scroll-target="#probability-density-function-1">Probability density function</a></li>
  <li><a href="#distribution