org.apache.commons.math.distribution
Interface PascalDistribution

All Superinterfaces:

DiscreteDistribution, Distribution, IntegerDistribution

All Known Implementing Classes:

PascalDistributionImpl

public interface PascalDistribution
extends IntegerDistribution

The Pascal distribution. The Pascal distribution is a special case of the Negative Binomial distribution where the number of successes parameter is an integer. There are various ways to express the probability mass and distribution functions for the Pascal distribution. The convention employed by the library is to express these functions in terms of the number of failures in a Bernoulli experiment [2].

References:

1. Negative Binomial Distribution
Waiting Time in a Bernoulli Process

Since:

1.2

Version:

$Id: PascalDistribution.java 1131229 2011-06-03 20:49:25Z luc $

Method Summary

int	getNumberOfSuccesses() Access the number of successes for this distribution.
double	getProbabilityOfSuccess() Access the probability of success for this distribution.

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

cumulativeProbability, cumulativeProbability, inverseCumulativeProbability, probability, reseedRandomGenerator, sample, sample

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

probability

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

cumulativeProbability, cumulativeProbability, getNumericalMean, getNumericalVariance, isSupportConnected, isSupportLowerBoundInclusive, isSupportUpperBoundInclusive

Method Detail

getNumberOfSuccesses

int getNumberOfSuccesses()

Access the number of successes for this distribution.

Returns:

the number of successes.

getProbabilityOfSuccess

double getProbabilityOfSuccess()

Access the probability of success for this distribution.

Returns:

the probability of success.