Performs a sampling version of Fisher's exact test for a two-way
contingency table.
Usage
fisher(tab, n.sim = 1000)
Arguments
tab
A matrix of counts.
n.sim
Number of samples of permuted tables to consider.
Value
A single number: the P-value testing independence of rows and columns
in the table.
Details
This is like the function fisher.test, but
calculates an approximate P-value rather than performing a complete
enumeration. This will be better for large, sparse tables.