 removal, whereas the
regular SMA slope changed from <code>0.64</code> to <code>0.78</code>.
In both cases there is significant evidence against the 2/3 power law
after outlier removal, but in the robust case, this change was less
dramatic. It is expected that robust SMA would be less sensitive to
outliers.</p>
</div>
<div class="section level2">
<h2 id="exercise-13-4-robust-allometric-line-fitting-for-ians-leaf-data">Exercise 13.4: Robust allometric line fitting for Ian’s leaf
data<a class="anchor" aria-