I have heard that people favour the Pearson's Chi-square over Fisher's
exact test because the latter is more conservative. Some people therefore
only use Fisher's exact test when some of the expected counts are too
small. But nowadays we can quite easily calculate the exact p-value based
on the Pearson statistic, provided it's not a huge table (SPSS can do it).
Is there any place for Fisher's exact test then?
Tim
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