On Fri, Apr 29, 2011 at 8:01 AM, Mike Miller <[email protected]> wrote:
> On Thu, 28 Apr 2011, viostorm wrote:
>
>> I'm using fisher.exact on a 4x2 table and it seems to work.
>>
>> Does anyone know exactly what is going on? I thought fisher.exact is only
>> for 2x2 tables.
>
>
> You were wrong. I'm sure there's nothing wrong with the program. You will
> find that with bigger tables and larger sample sizes the computational cost
> becomes quite enormous.
In fact, with large tables, roundoff error becomes significant before
computational cost becomes prohibitive.
-thomas
--
Thomas Lumley
Professor of Biostatistics
University of Auckland
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