g 3 variables:</p><ul><li><p><code>stopdist</code> (stopping distance measured to the nearest foot)</p></li>
<li><p><code>tire</code> (a factor with levels <code>A</code>, <code>B</code>, <code>C</code>, and <code>D</code>)</p></li>
<li><p><code>order</code> (order the experiment was conducted)</p></li>
</ul></div>
    <div id="references">
    <h2>References</h2>
    <p>Ugarte, M. D., Militino, A. F., and Arnholt, A. T. 2015. <em>Probability and Statistics with R</em>, Second Edition. Chapman &amp; Hall / 