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This is wrong. All the material is about a standard hypergeometric distribution.

I agree, it's clearly just the hypergeometric. It's highly misleading. Glenbarnett ( talk) 02:23, 9 January 2015 (UTC) reply

According to "Univariate Discrete Distributions", Johnson, Kotz and Kemp, the negative hypergeometric distribution is also known as the beta binomial, as indicated in Table 2.1 p. 83 "The Types of Distributions Derived by Ord (1967a)." An easy way to correct this article, which has multiple issues, would be to replace it with a redirect to beta binomial. Any thoughts? Mathstat ( talk) 03:05, 3 February 2015 (UTC) reply

I removed the formulas copied from hypergeometric distribution, and inserted formulas from the Encyclopedia of Math. Some details are still missing.

In any case, I DO NOT think this article should be a redirect to beta binomial. Beta binomial is explained differently and the relation to hypergeometric distribution is not sufficiently clear. -- Erel Segal ( talk) 14:53, 23 March 2015 (UTC) reply

See Encyclopedia of Math for sources, and a derivation of the formula for the probabilities. Boris Tsirelson ( talk) 08:40, 27 March 2015 (UTC) reply

The formula

${\displaystyle {\displaystyle NHG_{N,K,R}(k)=1-HG_{N,N-K,k}(r-1)}}$

should probably read

${\displaystyle {\displaystyle NHG_{N,K,r}(k)=1-HG_{N,N-K,k}(r-1)}}$

Bo Jacoby ( talk) 09:52, 3 January 2018 (UTC). reply

In the introduction of this Wikipedia article, it is stated that "male" and "female" are two mutually exclusive categories that can completely encompass a sample. This is not the case for either gender or biological sex, due to the existence of nonbinary and intersex individuals, respectively. Besenj ( talk) 06:33, 12 June 2022 (UTC) reply