or example, we can produce marginal effects at both levels of <code>am</code> and the values from the five-number summary (minimum, Q1, median, Q3, and maximum) of observed values of <code>hp</code>. This produces 2 * 5 = 10 sets of marginal effects estimates:</p>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="kw"><a href="../reference/margins.html">margins</a></span>(x, <span class="dt">at =</span> <span class="kw">list</span>(<span class="dt">am =</span> <span cl