fisher: Fisher's exact test for a two-way table

In broman: Karl Broman's R Code

Fisher's exact test for a two-way table

Description

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.

Details

This is like the function stats::fisher.test(), but calculates an approximate P-value rather than performing a complete enumeration. This will be better for large, sparse tables.

Value

A single number: the P-value testing independence of rows and columns in the table.

See Also

stats::chisq.test(), stats::fisher.test(), chisq()

Examples

TeaTasting <- matrix(c(3,1,1,3),nrow=2)
fisher(TeaTasting,1000)

broman documentation built on May 29, 2024, 7:18 a.m.