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<table width="100%" summary="page for Griliches"><tr><td>Griliches</td><td align="right">R Documentation</td></tr></table>

<h2>Wage Datas </h2>

<h3>Description</h3>


<p>a cross-section from 1980
</p>
<p><EM>number of observations</EM> :  758
</p>
<p><EM>observation</EM> :  individuals
</p>
<p><EM>country</EM> :  United States
</p>


<h3>Usage</h3>

<pre>data(Griliches)</pre>


<h3>Format</h3>

<p>A dataframe containing :
</p>

<dl>
<dt>rns</dt><dd><p>residency in the southern states (first observation) ?</p>
</dd>
<dt>rns80</dt><dd><p>same variable for 1980</p>
</dd>
<dt>mrt</dt><dd><p>married  (first observation) ?</p>
</dd>
<dt>mrt80</dt><dd><p>same variable for 1980</p>
</dd>
<dt>smsa</dt><dd><p>residency in metropolan areas (first observation) ?</p>
</dd>
<dt>smsa80</dt><dd><p>same variable for 1980</p>
</dd>
<dt>med</dt><dd><p>mother's education in years</p>
</dd>
<dt>iq</dt><dd><p>IQ score</p>
</dd>
<dt>kww</dt><dd><p>score on the &ldquo;knowledge of the world of work&rdquo; test</p>
</dd>
<dt>year</dt><dd><p>year of the observation</p>
</dd>
<dt>age</dt><dd><p>age (first observation)</p>
</dd>
<dt>age80</dt><dd><p>same variable for 1980</p>
</dd>
<dt>school</dt><dd><p>completed years of schooling (first observation)</p>
</dd>
<dt>school80</dt><dd><p>same variable for 1980</p>
</dd>
<dt>expr</dt><dd><p>experience in years (first observation)</p>
</dd>
<dt>expr80</dt><dd><p>same variable for 1980</p>
</dd>
<dt>tenure</dt><dd><p>tenure in years (first observation)</p>
</dd>
<dt>tenure80</dt><dd><p>same variable for 1980</p>
</dd>
<dt>lw</dt><dd><p>log wage (first observation)</p>
</dd>
<dt>lw80</dt><dd><p>same variable for 1980</p>
</dd>
</dl>



<h3>Source</h3>


<p>Blackburn, M.  and   Neumark D. (1992) &ldquo;Unobserved ability, efficiency wages, and interindustry wage differentials&rdquo;, <EM>Quarterly Journal of Economics</EM>, <B>107</B>, 1421-1436.
</p>


<h3>References</h3>


<p>Hayashi, F. (2000) <EM>Econometrics</EM>, Princeton University Press, <a href="http://www.e.u-tokyo.ac.jp/~hayashi/hayashi_econometrics.htm">http://www.e.u-tokyo.ac.jp/~hayashi/hayashi_econometrics.htm</a>, chapter 3, 250-256.
</p>


<h3>See Also</h3>

<p><code>Index.Source</code>, <code>Index.Economics</code>, <code>Index.Econometrics</code>, <code>Index.Observations</code></p>


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