From p.dalgaard at biostat.ku.dk  Wed Nov 24 18:32:15 2004
From: p.dalgaard at biostat.ku.dk (Peter Dalgaard)
Date: Wed Nov 24 18:34:25 2004
Subject: (PR#7393) Re: [Rd] dhyper() does not allow non-integer values for
In-Reply-To: <20041124151107.0D93510EDD@slim.kubism.ku.dk>
References: <20041124151107.0D93510EDD@slim.kubism.ku.dk>
Message-ID: <x23byz5f1c.fsf@biostat.ku.dk>

tlumley@u.washington.edu writes:

> >
> > dhyper() does not allow non-integer values for input parameters m and n.
> >
> > this is in contrast to the other functions in the _hyper() "family",
> 
> I would argue that the bug was in the other functions. If not, there is a=
> =20
> bug in the documentation, which gives no way to tell what the result=20
> should mean for non-integer m, n, k.


My initial reaction too (and surely it is not a bug that functions
behave inconsistently in regions where they are not documented to work
at all), but on the other hand, noninteger m,n do appear to give a
well-defined distribution, and perhaps there's a way of making sense
of it? I wouldn't think it corresponds to noncentral hypergeometric
distributions.


>  =09-thomas
(who is suddenly coming across in quoted-unreadable?)


-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
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(PR#7393) Re: [Rd] dhyper() does not allow non-integer values for
Peter Dalgaard