public class

MeanAndStandardDeviation

extends Object
implements Serializable
java.lang.Object
   ↳ org.jfree.data.statistics.MeanAndStandardDeviation

Class Overview

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

Summary

Public Constructors
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.
Public Methods
boolean equals(Object obj)
Tests this instance for equality with an arbitrary object.
Number getMean()
Returns the mean.
double getMeanValue()
Returns the mean as a double primitive.
Number getStandardDeviation()
Returns the standard deviation.
double getStandardDeviationValue()
Returns the standard deviation as a double primitive.
String toString()
Returns a string representing this instance.
[Expand]
Inherited Methods
From class java.lang.Object

Public Constructors

public MeanAndStandardDeviation (double mean, double standardDeviation)

Creates a new mean and standard deviation record.

Parameters
mean the mean.
standardDeviation the standard deviation.

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.

Public Methods

public boolean equals (Object obj)

Tests this instance for equality with an arbitrary object.

Parameters
obj the object (null permitted).
Returns
  • A boolean.

public Number getMean ()

Returns the mean.

Returns
  • The mean.

public double getMeanValue ()

Returns the mean as a double primitive. If the underlying mean is null, this method will return Double.NaN.

Returns
  • The mean.
See Also

public Number getStandardDeviation ()

Returns the standard deviation.

Returns
  • The standard deviation.

public double getStandardDeviationValue ()

Returns the standard deviation as a double primitive. If the underlying standard deviation is null, this method will return Double.NaN.

Returns
  • The standard deviation.

public String toString ()

Returns a string representing this instance.

Returns
  • A string.