ction id="lognormal" class="level2">
<h2 class="anchored" data-anchor-id="lognormal">Lognormal distribution</h2>
<section id="probability-density-function" class="level3">
<h3 class="anchored" data-anchor-id="probability-density-function">Probability density function</h3>
<p>If <span class="math inline">\(\mu \in \mathbb{R}\)</span> and <span class="math inline">\(\sigma \in \mathbb{R}^+\)</span>, then for <span class="math inline">\(y \in
\mathbb{R}^+\)</span>, <span class="math display">\[\begin{equation*