[R] Round error?
p.dalgaard at biostat.ku.dk
Fri Nov 14 16:04:55 CET 2003
Aurora Torrente <aurora at ebi.ac.uk> writes:
> Hi all,
> I have tried to compute a p-value for a hypergeometric distribution as:
> dhyper(x,k,l,n) + phyper(x,k,l,n,lower.tail=FALSE)
> and sometimes obtained negative values. Do you know if it is because
> a round error or am I doing something wrong?
Could you give us specific x,k,l,n where this happens, please. It
sounds like it shouldn't happen.
O__ ---- Peter Dalgaard Blegdamsvej 3
c/ /'_ --- Dept. of Biostatistics 2200 Cph. N
(*) \(*) -- University of Copenhagen Denmark Ph: (+45) 35327918
~~~~~~~~~~ - (p.dalgaard at biostat.ku.dk) FAX: (+45) 35327907
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