
<p>a cross-section
</p>
<p><em>number of observations</em> :  601
</p>
<p><em>observation</em> :  individuals
</p>
<p><em>country</em> :  United States
</p>


<h3>Usage</h3>

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


<h3>Format</h3>

<p>A dataframe containing :
</p>

<dl>
<dt>sex</dt><dd><p>a factor with levels (male,female)</p>
</dd>
<dt>age</dt><dd><p>age</p>
</dd>
<dt>ym</dt><dd><p>number of years married</p>
</dd>
<dt>child</dt><dd><p>children ? a factor </p>
</dd>
<dt>religious</dt><dd>
