EVOLUTION-MANAGER
Edit File: Boston.html
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>R: Housing Values in Suburbs of Boston</title> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <link rel="stylesheet" type="text/css" href="R.css" /> </head><body> <table width="100%" summary="page for Boston {MASS}"><tr><td>Boston {MASS}</td><td style="text-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: </p> <dl> <dt><code>crim</code></dt><dd> <p>per capita crime rate by town. </p> </dd> <dt><code>zn</code></dt><dd> <p>proportion of residential land zoned for lots over 25,000 sq.ft. </p> </dd> <dt><code>indus</code></dt><dd> <p>proportion of non-retail business acres per town. </p> </dd> <dt><code>chas</code></dt><dd> <p>Charles River dummy variable (= 1 if tract bounds river; 0 otherwise). </p> </dd> <dt><code>nox</code></dt><dd> <p>nitrogen oxides concentration (parts per 10 million). </p> </dd> <dt><code>rm</code></dt><dd> <p>average number of rooms per dwelling. </p> </dd> <dt><code>age</code></dt><dd> <p>proportion of owner-occupied units built prior to 1940. </p> </dd> <dt><code>dis</code></dt><dd> <p>weighted mean of distances to five Boston employment centres. </p> </dd> <dt><code>rad</code></dt><dd> <p>index of accessibility to radial highways. </p> </dd> <dt><code>tax</code></dt><dd> <p>full-value property-tax rate per \$10,000. </p> </dd> <dt><code>ptratio</code></dt><dd> <p>pupil-teacher ratio by town. </p> </dd> <dt><code>black</code></dt><dd> <p><i>1000(Bk - 0.63)^2</i> where <i>Bk</i> is the proportion of blacks by town. </p> </dd> <dt><code>lstat</code></dt><dd> <p>lower status of the population (percent). </p> </dd> <dt><code>medv</code></dt><dd> <p>median value of owner-occupied homes in \$1000s. </p> </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 style="text-align: center;">[Package <em>MASS</em> version 7.3-51.4 <a href="00Index.html">Index</a>]</div> </body></html>