an></code></pre></div>
<p>This suddenly gives a significant effect (<span class="math inline">\(r=0.50\)</span>, <span class="math inline">\(P=0.01\)</span>), with the slope having jumped up
from <code>0.64</code> to <code>0.78</code>. Using robust methods:</p>
<div class="sourceCode" id="cb10"><pre class="downlit sourceCode r">
<code class="sourceCode R"><span><span class="va">sma_brainBodyRobust</span> <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/pkg/smatr/man/sma.html" class="exter