[R] p-value > 1 in fisher.test()

[Peter Dalgaard]

"Yi-Xiong Zhou" <yzhou at sdsc.edu> writes:

> The following contingency table generates p-value > 1 from fisher.test()
> 
>  
> 
> ff = c(0,10,250,5000); dim(ff) = c(2,2); fhisher.test(ff)$p.value

On this system (PIII, Fedora Core 3):

> ff = c(0,10,250,5000); dim(ff) = c(2,2); fisher.test(ff)$p.value -1
[1] 1.384892e-12

Is that interesting?

-- 
   O__  ---- Peter Dalgaard             Blegdamsvej 3  
  c/ /'_ --- Dept. of Biostatistics     2200 Cph. N   
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