sis of variance applied to a two-way
classification.
</p>


<h3>Usage</h3>

<pre><code class='language-R'>data(Dactyl)</code></pre>


<h3>Format</h3>

<p>A data frame with 60 observations on the following 3 variables.
</p>

<dl>
<dt><code>Foot</code></dt><dd><p>an ordered factor with levels <code>1</code> &lt; <code>2</code> &lt; <code>3</code> &lt; <code>4</code></p>
</dd>
<dt><code>Lines</code></dt><dd><p>an ordered factor with levels <code>1:5</code> &lt; <code>6:10</code> &lt; <code>11:15</code> &lt; <c