$</span><span class="va">IQ</span><span class="op">)</span></span></code></pre></div>
<p>Regression of IQ on the original variables in <code>X</code></p>
<div class="sourceCode" id="cb22"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="va">mod1</span> <span class="op">&lt;-</span> <span class="fu"><a href="https://rdrr.io/r/stats/lm.html" class="external-link">lm</a></span><span class="op">(</span><span class="va">IQ</span> <span class="op">~</span> <span class="va">height</