org.statcato.statistics

Class ChiSquareProbabilityDistribution

java.lang.Object

org.statcato.statistics.ProbabilityDistribution

org.statcato.statistics.ChiSquareProbabilityDistribution

public class ChiSquareProbabilityDistribution
extends ProbabilityDistribution

Chi Square probability distribution class.

Since:

1.0

Constructor Summary

Constructors

Constructor and Description
ChiSquareProbabilityDistribution(double v) Constructor, given the degrees of freedom

Method Summary

Modifier and Type	Method and Description
double	cumulativeProbability(double x) Returns the cumulative probabililty up to x.
double	density(double x) Returns the density of the distribution at x.
double	inverseCumulativeProbability(double area) Returns the inverse cumulative probability.

Methods inherited from class org.statcato.statistics.ProbabilityDistribution

inverseCumulativeProbability

Methods inherited from class java.lang.Object

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

Constructor Detail

ChiSquareProbabilityDistribution

public ChiSquareProbabilityDistribution(double v)

Constructor, given the degrees of freedom

Parameters:

v - degrees of freedom

Method Detail

density

public double density(double x)

Returns the density of the distribution at x.

Specified by:

density in class ProbabilityDistribution

Parameters:

x -

Returns:

probability density at x

cumulativeProbability

public double cumulativeProbability(double x)

Returns the cumulative probabililty up to x.

Specified by:

cumulativeProbability in class ProbabilityDistribution

Parameters:

x -

Returns:

cumulative probability P(<=x)

inverseCumulativeProbability

public double inverseCumulativeProbability(double area)

Returns the inverse cumulative probability.

Parameters:

area - cumulative probability

Returns:

inverse cumulative probability