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<table width="100%" summary="page for ships {MASS}"><tr><td>ships {MASS}</td><td align="right">R Documentation</td></tr></table>
<h2>Ships Damage Data</h2>
<h3>Description</h3>
<p>
Data frame giving the number of damage incidents and aggregate
months of service by ship type,
year of construction, and period of operation.
</p>
<h3>Usage</h3>
<pre>
ships
</pre>
<h3>Format</h3>
<dl>
<dt><code>type</code></dt><dd>type: <code>"A"</code> to <code>"E"</code>
</dd>
<dt><code>year</code></dt><dd>year of construction: 1960-64, 65-69, 70-74, 75-79
(coded as <code>"60"</code>, <code>"65"</code>, <code>"70"</code>, <code>"75"</code>)
</dd>
<dt><code>period</code></dt><dd>period of operation : 1960-74, 75-79
</dd>
<dt><code>service</code></dt><dd>aggregate months of service
</dd>
<dt><code>incidents</code></dt><dd>number of damage incidents
</dd></dl>
<h3>Source</h3>
<p>
P. McCullagh and J. A. Nelder, (1983),
<EM>Generalized Linear Models.</EM>
Chapman & Hall, section 6.3.2, page 137
</p>
<hr><div align="center">[Package <em>MASS</em> version 7.2-44 <a href="00Index.html">Index]</a></div>
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