ProbabilityDistribution







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org.statcato.statistics

Class ProbabilityDistribution

java.lang.Object
org.statcato.statistics.ProbabilityDistribution


Direct Known Subclasses: ChiSquareProbabilityDistribution, ExponentialProbabilityDistribution, FProbabilityDistribution, NormalProbabilityDistribution, StudentTProbabilityDistribution, UniformProbabilityDistribution



public abstract class ProbabilityDistributionextends java.lang.Object



Abtract base class of different types of continuous probability distributions. Subclasses must implement density and cumulativeProbability methods.




Since:
1.0
Version:
%I%, %G%
Author:
Margaret Yau











Constructor Summary


ProbabilityDistribution()


           


 






Method Summary



abstract  double
cumulativeProbability(double x)


          Returns the cumulative probabililty up to x.



abstract  double
density(double x)


          Returns the density of the distribution at x.



 double
inverseCumulativeProbability(double x1,
double x2,
double tol,
double area)


          Returns the inverse cumulative probability.


 


Methods inherited from class java.lang.Object


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


 








Constructor Detail




ProbabilityDistribution

public ProbabilityDistribution()









Method Detail




density

public abstract double density(double x)

Returns the density of the distribution at x.


Parameters:x -
Returns:probability density at x





cumulativeProbability

public abstract double cumulativeProbability(double x)

Returns the cumulative probabililty up to x.


Parameters:x -
Returns:cumulative probability P(












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