edu.uah.math.distributions
Class GeometricDistribution

java.lang.Object
  edu.uah.math.distributions.Distribution
      edu.uah.math.distributions.NegativeBinomialDistribution
          edu.uah.math.distributions.GeometricDistribution

All Implemented Interfaces:

java.io.Serializable

public class GeometricDistribution
extends NegativeBinomialDistribution
implements java.io.Serializable

This class models the geometric distribution with a given success probability. This distribution models the trial number of the first success in a sequence of Bernoulli trials.

Version:

August, 2003

Author:

Kyle Siegrist, Dawn Duehring

See Also:

Serialized Form

Field Summary

Fields inherited from class edu.uah.math.distributions.Distribution

CONTINUOUS, DISCRETE, MIXED

Constructor Summary

GeometricDistribution()
This default constructor creates a new geometric distribution with parameter 0.5

GeometricDistribution(double p)
This general constructor creates a new geometric distribution with a specified success probabilitiy

Method Summary

double	getFactorialMoment(int k) This method computes the factorial moment of a specified order.
void	setParameters(int k, double p) This method sets the negative binomial parameters, and ensures that the number of successes is set at 1.
void	setSuccesses(int k) This method ensures that the number of successes is set at 1.
java.lang.String	toString() This method returns a string that gives the name of the distribution and the values of the parameters.

Methods inherited from class edu.uah.math.distributions.NegativeBinomialDistribution

getDensity, getMaxDensity, getMean, getMGF, getPGF, getProbability, getSuccesses, getVariance, setProbability, simulate

Methods inherited from class edu.uah.math.distributions.Distribution

getCDF, getDomain, getFailureRate, getMedian, getMoment, getMoment, getQuantile, getSD, getType, setDomain, setDomain

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

GeometricDistribution

public GeometricDistribution(double p)

This general constructor creates a new geometric distribution with a specified success probabilitiy

Parameters:

p - the success probability

GeometricDistribution

public GeometricDistribution()

This default constructor creates a new geometric distribution with parameter 0.5

Method Detail

getFactorialMoment

public double getFactorialMoment(int k)

This method computes the factorial moment of a specified order.

Parameters:

k - the order

Returns:

the factorial moment of order k

setSuccesses

public void setSuccesses(int k)

This method ensures that the number of successes is set at 1.

Overrides:

setSuccesses in class NegativeBinomialDistribution

Parameters:

k - the number of successes

setParameters

public void setParameters(int k,
                          double p)

This method sets the negative binomial parameters, and ensures that the number of successes is set at 1.

Overrides:

setParameters in class NegativeBinomialDistribution

Parameters:

k - the number of successes

p - the probability of success

toString

public java.lang.String toString()

This method returns a string that gives the name of the distribution and the values of the parameters.

Overrides:

toString in class NegativeBinomialDistribution

Returns:

a string giving the name of the distribution and the values of the parameters