<div id="format">
    <h2>Format</h2>
    <p>A data frame with 30 observations on two variables</p><dl><dt>school</dt>
<dd><p>type of school either <code>private</code> or <code>public</code></p></dd>
 
<dt>time</dt>
<dd><p>number of hours per week spent on homework</p></dd>
 

</dl></div>
    <div id="references">
    <h2>References</h2>
    <p>Kitchens, L. J. (2003) <em>Basic Statistics and Data Analysis</em>.
Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.</p>
    </div>

    <div id="ref