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## Re: [Bug-gsl] Hypergeometric distribution

**From**: |
Brian Gough |

**Subject**: |
Re: [Bug-gsl] Hypergeometric distribution |

**Date**: |
Fri, 12 Mar 2004 15:02:30 +0000 |

Jussi Piitulainen writes:
>* The info page says p(k) = C(n_1,k) C(n_2, t-k) / C(n_1 + n_2,k). It*
>* does not tell what the parameters are, but I believe the very last*
>* symbol is wrong, and p(k) = C(n_1,k) C(n_2, t-k) / C(n_1 + n_2,t) is*
>* meant. It also says the domain of k is max(0,t-n_2),...,max(t,n_1).*
>* If "domain" means the possible values, I believe 0,...,min(t,n_1) is*
>* better. (No definition is given for C(n_2, t-k) with t < k.)*
>* Also, the documentation mentions an N3 where T must be meant.*
Thanks for the bug report.
I will correct that in the next release.
--
Brian Gough