edu.uah.math.distributions
Class DiscreteUniformDistribution

java.lang.Object
  edu.uah.math.distributions.Distribution
      edu.uah.math.distributions.FiniteDistribution
          edu.uah.math.distributions.DiscreteUniformDistribution

All Implemented Interfaces:

java.io.Serializable

public class DiscreteUniformDistribution
extends FiniteDistribution
implements java.io.Serializable

This class models the discrete uniform distribution on a finite set.

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

DiscreteUniformDistribution()
This default constructor creates a new discrete uniform distribution on {1, 2, 3, 4, 5, 6}.

DiscreteUniformDistribution(double a, double b, double w)
This general constructor creates a new discrete uniform distribution on a specified domain.

Method Summary

void	setParameters(double a, double b, double w, double[] p) This method sets the finite distribution parameters to ensure that the uniform distribution is not changed.
void	setProbabilities(double[] p) This method sets the probabilities to ensure that the uniform distribution is not changed.
double	simulate() This method simulates a value from the distribution.
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.FiniteDistribution

getDensity, getLowerValue, getProbabilities, getProbabilities, getSize, getUpperValue, getWidth, setLowerValue, setParameters, setProbabilities, setUpperValue, setWidth

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

getCDF, getDomain, getFailureRate, getMaxDensity, getMean, getMedian, getMGF, getMoment, getMoment, getPGF, getQuantile, getSD, getType, getVariance, setDomain, setDomain

Methods inherited from class java.lang.Object

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

Constructor Detail

DiscreteUniformDistribution

public DiscreteUniformDistribution(double a,
                                   double b,
                                   double w)

This general constructor creates a new discrete uniform distribution on a specified domain.

Parameters:

a - the lower value of the domain

b - the upper value of the domain

w - the step size of the domain

DiscreteUniformDistribution

public DiscreteUniformDistribution()

This default constructor creates a new discrete uniform distribution on {1, 2, 3, 4, 5, 6}.

Method Detail

simulate

public double simulate()

This method simulates a value from the distribution.

Overrides:

simulate in class Distribution

Returns:

a simulated value from the distribution

setProbabilities

public void setProbabilities(double[] p)

This method sets the probabilities to ensure that the uniform distribution is not changed.

Overrides:

setProbabilities in class FiniteDistribution

Parameters:

p - the array of probabilities

setParameters

public void setParameters(double a,
                          double b,
                          double w,
                          double[] p)

This method sets the finite distribution parameters to ensure that the uniform distribution is not changed.

Overrides:

setParameters in class FiniteDistribution

Parameters:

a - the lower value

b - the upper value

w - the width

p - the array of probabilities

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 FiniteDistribution

Returns:

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