/div>
<p>We get exactly the same test results: <span class="math inline">\(r=-0.07\)</span>, <span class="math inline">\(P=0.71\)</span> and reach the same conclusion.
Note that <code>3/2</code> is towards the centre of the confidence
interval for the SMA slope.</p>
<p><em>Is this what you would have expected? Is there evidence against
the 2/3 power law?</em></p>
<p>This is as expected, (S)MA is invariant under flipping of
<code>x</code> and <code>y</code>. As above there is no evidence against
the 2/3 powe