[MATH-644] for the class of hyper-geometric distribution, for some number the method "upperCumulativeProbability" return a probability greater than 1 which is impossible.

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.2
• Fix Version/s: 3.1
• Labels: hypergeometric probability
• Assignee: Unassigned
• Reporter: marzieh
• Created: 13/Aug/11 06:26
• Updated: 04/Mar/13 18:53
• Resolved: 31/May/12 23:45

Description

In windows 7, I used common.Math library. I used class "HypergeometricDistributionImpl" and method "upperCumulativeProbability" of zero for distribution and the return value is larget than 1. the following code is working error.

HypergeometricDistributionImpl u = new HypergeometricDistributionImpl(14761461, 1035 ,1841 );
System.out.println(u.upperCumulativeProbability(0))

Thanks