org.apache.commons.math.distribution

Interface ChiSquaredDistribution

All Superinterfaces:

ContinuousDistribution, Distribution, HasDensity<java.lang.Double>

All Known Implementing Classes:

ChiSquaredDistributionImpl

public interface ChiSquaredDistribution
extends ContinuousDistribution, HasDensity<java.lang.Double>

The Chi-Squared Distribution.

References:

• Chi-Squared Distribution

Method Summary

Modifier and Type	Method and Description
double	density(java.lang.Double x) Return the probability density for a particular point.
double	getDegreesOfFreedom() Access the degrees of freedom.
void	setDegreesOfFreedom(double degreesOfFreedom) Deprecated. as of v2.1

Methods inherited from interface org.apache.commons.math.distribution.ContinuousDistribution

inverseCumulativeProbability

Methods inherited from interface org.apache.commons.math.distribution.Distribution

cumulativeProbability, cumulativeProbability

Method Detail

setDegreesOfFreedom

@Deprecated
void setDegreesOfFreedom(double degreesOfFreedom)

Deprecated. as of v2.1

Modify the degrees of freedom.

Parameters:

degreesOfFreedom - the new degrees of freedom.

getDegreesOfFreedom

double getDegreesOfFreedom()

Access the degrees of freedom.

Returns:

the degrees of freedom.

density

double density(java.lang.Double x)

Return the probability density for a particular point.

Specified by:

density in interface HasDensity<java.lang.Double>

Parameters:

x - The point at which the density should be computed.

Returns:

The pdf at point x.