org.apache.commons.math.distribution

Interface ContinuousDistribution

All Superinterfaces:

Distribution

All Known Subinterfaces:

BetaDistribution, CauchyDistribution, ChiSquaredDistribution, ExponentialDistribution, FDistribution, GammaDistribution, NormalDistribution, TDistribution, WeibullDistribution

All Known Implementing Classes:

AbstractContinuousDistribution, BetaDistributionImpl, CauchyDistributionImpl, ChiSquaredDistributionImpl, ExponentialDistributionImpl, FDistributionImpl, GammaDistributionImpl, NormalDistributionImpl, TDistributionImpl, WeibullDistributionImpl

public interface ContinuousDistribution
extends Distribution

Base interface for continuous distributions.

Note: this interface will be extended in version 3.0 to include
public double density(double x)
that is, from version 3.0 forward, continuous distributions must include implementations of probability density functions. As of version 2.1, all continuous distribution implementations included in commons-math provide implementations of this method.

Method Summary

Modifier and Type	Method and Description
double	inverseCumulativeProbability(double p) For this distribution, X, this method returns x such that P(X < x) = p.

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

cumulativeProbability, cumulativeProbability

Method Detail

inverseCumulativeProbability

double inverseCumulativeProbability(double p)
                             throws MathException

For this distribution, X, this method returns x such that P(X < x) = p.

Parameters:

p - the cumulative probability.

Returns:

x.

Throws:

MathException - if the inverse cumulative probability can not be computed due to convergence or other numerical errors.