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<table width="100%" summary="page for hubers {MASS}"><tr><td>hubers {MASS}</td><td align="right">R Documentation</td></tr></table>
<h2>Huber Proposal 2 Robust Estimator of Location and/or Scale</h2>


<h3>Description</h3>

<p>
Finds the Huber M-estimator for location with scale specified, scale
with location specified, or both if neither is specified.
</p>


<h3>Usage</h3>

<pre>
hubers(y, k = 1.5, mu, s, initmu = median(y), tol = 1e-06)
</pre>


<h3>Arguments</h3>

<table summary="R argblock">
<tr valign="top"><td><code>y</code></td>
<td>
vector y of data values
</td></tr>
<tr valign="top"><td><code>k</code></td>
<td>
Winsorizes at <code>k</code> standard deviations
</td></tr>
<tr valign="top"><td><code>mu</code></td>
<td>
specified location
</td></tr>
<tr valign="top"><td><code>s</code></td>
<td>
specified scale
</td></tr>
<tr valign="top"><td><code>initmu</code></td>
<td>
initial value of <code>mu</code>
</td></tr>
<tr valign="top"><td><code>tol</code></td>
<td>
convergence tolerance
</td></tr>
</table>

<h3>Value</h3>

<p>
list of location and scale estimates
</p>
<table summary="R argblock">
<tr valign="top"><td><code>mu</code></td>
<td>
location estimate
</td></tr>
<tr valign="top"><td><code>s</code></td>
<td>
scale estimate
</td></tr>
</table>

<h3>References</h3>

<p>
Huber, P. J. (1981)
<EM>Robust Statistics.</EM>
Wiley.
</p>
<p>
Venables, W. N. and Ripley, B. D. (2002)
<EM>Modern Applied Statistics with S.</EM> Fourth edition.  Springer.
</p>


<h3>See Also</h3>

<p>
<code><a href="huber.html">huber</a></code>
</p>


<h3>Examples</h3>

<pre>
hubers(chem)
hubers(chem, mu=3.68)
</pre>



<hr><div align="center">[Package <em>MASS</em> version 7.2-44 <a href="00Index.html">Index]</a></div>

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