org.apache.commons.math3.stat.descriptive.rank
Class Median

java.lang.Object
  org.apache.commons.math3.stat.descriptive.AbstractUnivariateStatistic
      org.apache.commons.math3.stat.descriptive.rank.Percentile
          org.apache.commons.math3.stat.descriptive.rank.Median

All Implemented Interfaces:

Serializable, UnivariateStatistic, MathArrays.Function

public class Median
extends Percentile
implements 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:

$Id: Median.java 7721 2013-02-14 14:07:13Z CardosoP $

See Also:

Serialized Form

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.math3.stat.descriptive.rank.Percentile

copy, copy, evaluate, evaluate, evaluate, evaluate, evaluate, getQuantile, setData, setData, setQuantile

Methods inherited from class org.apache.commons.math3.stat.descriptive.AbstractUnivariateStatistic

evaluate, getData, getDataRef, test, test, test, test

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Median

public Median()

Default constructor.

Median

public Median(Median original)
       throws NullArgumentException

Copy constructor, creates a new Median identical to the original

Parameters:

original - the Median instance to copy

Throws:

NullArgumentException - if original is null