NormalProbabilityDistribution







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org.statcato.statistics

Class NormalProbabilityDistribution

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



public class NormalProbabilityDistributionextends ProbabilityDistribution



Normal probability distribution class.




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











Constructor Summary


NormalProbabilityDistribution(double mu,
double sigma)


          Constructor a normal probability distribution given the mean and standard deviation.


 






Method Summary



 double
cumulativeProbability(double x)


          Returns the cumulative probabililty up to x.



 double
density(double x)


          Returns the density of the distribution at x.



 double
inverseCumulativeProbability(double area)


          Returns the inverse cumulative probability.


 


Methods inherited from class org.statcato.statistics.ProbabilityDistribution


inverseCumulativeProbability


 


Methods inherited from class java.lang.Object


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


 








Constructor Detail




NormalProbabilityDistribution

public NormalProbabilityDistribution(double mu,
double sigma)

Constructor a normal probability distribution given the mean and standard deviation.


Parameters:mu - meansigma - standard deviation








Method Detail




density

public double density(double x)

Returns the density of the distribution at x.


Specified by:density in class ProbabilityDistribution


Parameters:x -
Returns:probability density at x





cumulativeProbability

public double cumulativeProbability(double x)

Returns the cumulative probabililty up to x.


Specified by:cumulativeProbability in class ProbabilityDistribution


Parameters:x -
Returns:cumulative probability P(












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