e> and specifying the <code>at</code> argument:</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 class="dv">0</span><span class="op">:</span><span class="dv">1</span>))</code></pre></div>
<pre><code>## Average marginal effects at specified values</code></pre>
<pre><code>## lm(formula = mpg ~ cyl + wt * am, data