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From: Marzieh Ayati <msayati@gmail.com>
Date: Fri, 12 Aug 2011 10:58:47 -0400
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Subject: Re: [MATH]: question about HypergeometricDistributionImpl class
To: Commons Users List <user@commons.apache.org>
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Thanks for consideration. So can I suppose that this value is 1 or can I
trust on other result?

I was wondering to open JIRA ticket for this.

Thanks


On Thu, Aug 11, 2011 at 6:39 PM, Phil Steitz <phil.steitz@gmail.com> wrote:

> On 8/11/11 3:21 PM, Marzieh Ayati wrote:
> > HypergeometricDistributionImpl u = new
> > HypergeometricDistributionImpl(14761461, 1035 ,1841 );
> >         System.out.println(u.upperCumulativeProbability(0));
>
> Thanks for reporting this.  The value reported should obviously be
> exactly 1.  Due to limited precision in the approximation used to
> compute the distribution, what is returned by the code now in trunk
> (looks unchanged since 2.1) is 1.0000000000666514.  Would you mind
> opening a JIRA ticket for this?  Thanks again for reporting the problem.
>
> Phil
>
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Regards,
Marzieh Ayati

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