[R] Exact Tests for RxC contingency tables
Kurt Hornik
Kurt.Hornik at ci.tuwien.ac.at
Tue Aug 21 18:11:59 CEST 2001
>>>>> Mike Weale writes:
> I'm trying to perform exact tests on tables of approx. size 20x20,
> with about half the cells empty. fisher.test in the ctest package
> appears to fall down with tables bigger than about 6x6. Are there any
> other algorithms for exact tests implemented in other R-packages,
> which work on larger tables?
You can increase the workspace for the network algorithm in fisher.test
using argument `workspace'. But I would think that many empty cells
will give it a real hard time. I would go for the hybrid version or the
bootstrapped version of the chi-squared.test via
chisq.test(x, simulate.p.value = TRUE, B = 2000)
-k
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