statmod (version 1.0.8)

power.fisher.test: Power of Fisher's Exact Test for Comparing Proportions

Description

Calculate by simulation the power of Fisher's exact test for comparing two proportions given two margin counts.

Usage

power.fisher.test(p1, p2, n1, n2, alpha=0.05, nsim=100)

Arguments

p1
first proportion to be compared
p2
second proportion to be compared
n1
first sample size
n2
second sample size
alpha
significance level
nsim
number of simulated data sets

Value

  • Estimated power of the test

Details

Computes the power of Fisher's exact test for testing the null hypothesis that p1 equals p2 against the alternative that they are not equal.

See Also

fisher.test, power.t.test

Examples

Run this code
power.fisher.test(0.5,0.9,20,20) # 70% chance of detecting difference

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