span><span class="fu"><a href="https://rdrr.io/r/stats/qqnorm.html" class="external-link">qqline</a></span><span class="op">(</span><span class="fu"><a href="https://rdrr.io/r/stats/residuals.html" class="external-link">residuals</a></span><span class="op">(</span><span class="va">sma_brainBody</span><span class="op">)</span>, col<span class="op">=</span><span class="st">"red"</span><span class="op">)</span></span></code></pre></div>
<p><img src="Chapter13Solutions_files/figure-html/code13.5-1.png" width="7