org.statcato.statistics

Class DiscreteCustomProbabilityDistribution

java.lang.Object

org.statcato.statistics.DiscreteCustomProbabilityDistribution

public class DiscreteCustomProbabilityDistribution
extends java.lang.Object

Discrete probability distribution class with user-specified probabilities for discrete values.

Since:

1.0

Constructor Summary

Constructors

Constructor and Description
DiscreteCustomProbabilityDistribution(java.util.Vector<java.lang.Double> values, java.util.Vector<java.lang.Double> probabilities) Construct a discrete probability distribution with custom values and probabilities.

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.
java.lang.Double	inverseCumulativeProbability(double area) Returns the inverse cumulative probability.

Methods inherited from class java.lang.Object

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

Constructor Detail

DiscreteCustomProbabilityDistribution

public DiscreteCustomProbabilityDistribution(java.util.Vector<java.lang.Double> values,
                                             java.util.Vector<java.lang.Double> probabilities)

Construct a discrete probability distribution with custom values and probabilities.

Parameters:

values - a vector of values

probabilities - a vector of probabilities corresponding to the values

Method Detail

density

public double density(double x)

Returns the density of the distribution at x.

Parameters:

x - an integer

Returns:

probability density at x

cumulativeProbability

public double cumulativeProbability(double x)

Returns the cumulative probabililty up to x.

Parameters:

x -

Returns:

cumulative probability P(<=x)

inverseCumulativeProbability

public java.lang.Double inverseCumulativeProbability(double area)

Returns the inverse cumulative probability.

Parameters:

area - cumulative probability

Returns:

inverse cumulative probability