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<html><head><title>R: Morphological Measurements on Leptograpsus Crabs</title>
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<table width="100%" summary="page for crabs {MASS}"><tr><td>crabs {MASS}</td><td align="right">R Documentation</td></tr></table>
<h2>Morphological Measurements on Leptograpsus Crabs</h2>
<h3>Description</h3>
<p>
The <code>crabs</code> data frame has 200 rows and 8 columns, describing 5 morphological
measurements on 50 crabs each of two colour forms and both sexes, of the
species
<EM>Leptograpsus variegatus</EM>
collected at Fremantle, W. Australia.
</p>
<h3>Usage</h3>
<pre>
crabs
</pre>
<h3>Format</h3>
<p>
This data frame contains the following columns:
<dl>
<dt><code>sp</code></dt><dd><code>species</code> - <code>"B"</code> or <code>"O"</code> for blue or orange
</dd>
<dt><code>sex</code></dt><dd>as it says
</dd>
<dt><code>index</code></dt><dd>index 1:50 within each of the four groups
</dd>
<dt><code>FL</code></dt><dd>frontal lobe size (mm)
</dd>
<dt><code>RW</code></dt><dd>rear width (mm)
</dd>
<dt><code>CL</code></dt><dd>carapace length (mm)
</dd>
<dt><code>CW</code></dt><dd>carapace width (mm)
</dd>
<dt><code>BD</code></dt><dd>body depth (mm)
</dd></dl>
<h3>Source</h3>
<p>
Campbell, N.A. and Mahon, R.J. (1974) A multivariate
study of variation in two species of rock crab of genus
<EM>Leptograpsus.</EM>
<EM>Australian Journal of Zoology</EM>
<B>22</B>, 417–425.
</p>
<h3>References</h3>
<p>
Venables, W. N. and Ripley, B. D. (2002)
<EM>Modern Applied Statistics with S.</EM> Fourth edition. Springer.
</p>
<hr><div align="center">[Package <em>MASS</em> version 7.2-44 <a href="00Index.html">Index]</a></div>
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