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<html><head><title>R: Housing Values in Suburbs of Boston</title>
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<table width="100%" summary="page for Boston {MASS}"><tr><td>Boston {MASS}</td><td align="right">R Documentation</td></tr></table>
<h2>Housing Values in Suburbs of Boston</h2>
<h3>Description</h3>
<p>
The <code>Boston</code> data frame has 506 rows and 14 columns.
</p>
<h3>Usage</h3>
<pre>
Boston
</pre>
<h3>Format</h3>
<p>
This data frame contains the following columns:
<dl>
<dt><code>crim</code></dt><dd>per capita crime rate by town
</dd>
<dt><code>zn</code></dt><dd>proportion of residential land zoned for lots over 25,000 sq.ft.
</dd>
<dt><code>indus</code></dt><dd>proportion of non-retail business acres per town
</dd>
<dt><code>chas</code></dt><dd>Charles River dummy variable (= 1 if tract bounds river; 0 otherwise)
</dd>
<dt><code>nox</code></dt><dd>nitrogen oxides concentration (parts per 10 million)
</dd>
<dt><code>rm</code></dt><dd>average number of rooms per dwelling
</dd>
<dt><code>age</code></dt><dd>proportion of owner-occupied units built prior to 1940
</dd>
<dt><code>dis</code></dt><dd>weighted mean of distances to five Boston employment centres
</dd>
<dt><code>rad</code></dt><dd>index of accessibility to radial highways
</dd>
<dt><code>tax</code></dt><dd>full-value property-tax rate per $10,000
</dd>
<dt><code>ptratio</code></dt><dd>pupil-teacher ratio by town
</dd>
<dt><code>black</code></dt><dd><i>1000(Bk - 0.63)^2</i> where Bk is the proportion of blacks by town
</dd>
<dt><code>lstat</code></dt><dd>lower status of the population (percent)
</dd>
<dt><code>medv</code></dt><dd>median value of owner-occupied homes in $1000
</dd></dl>
<h3>Source</h3>
<p>
Harrison, D. and Rubinfeld, D.L. (1978)
Hedonic prices and the demand for clean air.
<EM>J. Environ. Economics and Management</EM>
<B>5</B>, 81–102.
</p>
<p>
Belsley D.A., Kuh, E. and Welsch, R.E. (1980)
<EM>Regression Diagnostics. Identifying Influential Data and Sources of Collinearity.</EM>
New York: Wiley.
</p>
<hr><div align="center">[Package <em>MASS</em> version 7.2-44 <a href="00Index.html">Index]</a></div>
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