## org.apache.commons.math.stat.descriptive.rank
Class Median

    java.lang.Object
      org.apache.commons.math.stat.descriptive.AbstractUnivariateStatistic
          org.apache.commons.math.stat.descriptive.rank.Percentile
              org.apache.commons.math.stat.descriptive.rank.Median

All Implemented Interfaces:
  java.io.Serializable, UnivariateStatistic

    public class Median

extends Percentile
implements java.io.Serializable

Returns the median of the available values. This is the same as the 50th percentile. See `Percentile` for a description of the algorithm used.

Note that this implementation is not synchronized. If multiple threads access an instance of this class concurrently, and at least one of the threads invokes the `increment()` or `clear()` method, it must be synchronized externally.

Version:
  $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $
See Also:
  Serialized Form

Field Summary
`private static long` `serialVersionUID` Serializable version identifier

Constructor Summary
`Median()` Default constructor.
`Median(Median original)` Copy constructor, creates a new `Median` identical to the `original`

Method Summary

Methods inherited from class org.apache.commons.math.stat.descriptive.rank.Percentile
`copy, copy, evaluate, evaluate, evaluate, getQuantile, setQuantile`

Methods inherited from class org.apache.commons.math.stat.descriptive.AbstractUnivariateStatistic
`evaluate, test, test`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### serialVersionUID

    private static final long serialVersionUID

  Serializable version identifier

  See Also:
    Constant Field Values

Constructor Detail

### Median

    public Median()

  Default constructor.

### Median

    public Median(Median original)

  Copy constructor, creates a new `Median` identical to the `original`

  Parameters:
    `original` - the `Median` instance to copy

Copyright (c) 2003-2011 Apache Software Foundation