org.jfree.data.statistics

Class MeanAndStandardDeviation

public class MeanAndStandardDeviation extends Object implements Serializable

A simple data structure that holds a mean value and a standard deviation value. This is used in the DefaultStatisticalCategoryDataset class.
Constructor Summary
MeanAndStandardDeviation(double mean, double standardDeviation)
Creates a new mean and standard deviation record.
MeanAndStandardDeviation(Number mean, Number standardDeviation)
Creates a new mean and standard deviation record.
Method Summary
booleanequals(Object obj)
Tests this instance for equality with an arbitrary object.
NumbergetMean()
Returns the mean.
NumbergetStandardDeviation()
Returns the standard deviation.

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

Parameters: mean the mean (null permitted). standardDeviation the standard deviation (null permitted.

Method Detail

equals

public boolean equals(Object obj)
Tests this instance for equality with an arbitrary object.

Parameters: obj the object (null permitted).

Returns: A boolean.

getMean

public Number getMean()
Returns the mean.

Returns: The mean.

getStandardDeviation

public Number getStandardDeviation()
Returns the standard deviation.

Returns: The standard deviation.