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

<h2>The 1980 U.S. Census Undercount</h2>

<h3>Description</h3>


<p>The <code>Ericksen</code> data frame has 66 rows and 9 columns.
The observations are 16 large cities, the remaining parts of
the states in which these cities are located, and the other
U. S. states.
</p>


<h3>Usage</h3>

<pre>
Ericksen
</pre>


<h3>Format</h3>


<p>This data frame contains the following columns:
</p>

<dl>
<dt>minority</dt><dd>
<p>Percentage black or Hispanic.
</p>
</dd>
<dt>crime</dt><dd>
<p>Rate of serious crimes per 1000 population.
</p>
</dd>
<dt>poverty</dt><dd>
<p>Percentage poor.
</p>
</dd>
<dt>language</dt><dd>
<p>Percentage having difficulty speaking or writing English.
</p>
</dd>
<dt>highschool</dt><dd>
<p>Percentage age 25 or older who had not finished highschool.
</p>
</dd>
<dt>housing</dt><dd>
<p>Percentage of housing in small, multiunit buildings.
</p>
</dd>
<dt>city</dt><dd><p>A factor with levels: 
<code>city</code>, major city; 
<code>state</code>, state or state-remainder.
</p>
</dd>
<dt>conventional</dt><dd>
<p>Percentage of households counted by conventional personal enumeration.
</p>
</dd>
<dt>undercount</dt><dd>
<p>Preliminary estimate of percentage undercount.
</p>
</dd>
</dl>



<h3>Source</h3>


<p>Ericksen, E. P., Kadane, J. B. and Tukey, J. W. (1989)
Adjusting the 1980 Census of Population and Housing. 
<EM>Journal of the American Statistical Association</EM> <B>84</B>, 927&ndash;944 [Tables 7 and 8].
</p>


<h3>References</h3>


<p>Fox, J. (2008)
<EM>Applied Regression Analysis and Generalized Linear Models</EM>,
Second Edition. Sage.  
</p>
<p>Fox, J. and Weisberg, S. (2011) 
<EM>An R Companion to Applied Regression</EM>, Second Edition, Sage.
</p>


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