org.jfree.data.statistics
Class MeanAndStandardDeviation

java.lang.Object
  org.jfree.data.statistics.MeanAndStandardDeviation

All Implemented Interfaces:

java.io.Serializable

public class MeanAndStandardDeviation

extends java.lang.Object

implements java.io.Serializable

A simple data structure that holds a mean value and a standard deviation value. This is used in the DefaultStatisticalCategoryDataset class.

See Also:

Serialized Form

Constructor Summary

MeanAndStandardDeviation(double mean, double standardDeviation)
Creates a new mean and standard deviation record.

MeanAndStandardDeviation(java.lang.Number mean, java.lang.Number standardDeviation)
Creates a new mean and standard deviation record.

Method Summary

boolean	equals(java.lang.Object obj) Tests this instance for equality with an arbitrary object.
java.lang.Number	getMean() Returns the mean.
java.lang.Number	getStandardDeviation() Returns the standard deviation.

Methods inherited from class java.lang.Object

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

Constructor Detail

MeanAndStandardDeviation

public MeanAndStandardDeviation(double mean,
                                double standardDeviation)

Creates a new mean and standard deviation record.

Parameters:

mean - the mean.

standardDeviation - the standard deviation.

MeanAndStandardDeviation

public MeanAndStandardDeviation(java.lang.Number mean,
                                java.lang.Number standardDeviation)

Creates a new mean and standard deviation record.

Parameters:

mean - the mean (null permitted).

standardDeviation - the standard deviation (null permitted.

Method Detail

getMean

public java.lang.Number getMean()

Returns the mean.

Returns:

The mean.

getStandardDeviation

public java.lang.Number getStandardDeviation()

Returns the standard deviation.

Returns:

The standard deviation.

equals

public boolean equals(java.lang.Object obj)

Tests this instance for equality with an arbitrary object.

Parameters:

obj - the object (null permitted).

Returns:

A boolean.