twotPermutation: Two Sample Permutation Test

In DAAG: Data Analysis and Graphics Data and Functions

Two Sample Permutation Test

Description

This function computes the p-value for the two sample t-test using a permutation test. The permutation density can also be plotted.

Usage

twotPermutation(x1 = DAAG::two65$ambient, x2 = DAAG::two65$heated, nsim = 2000,
plotit = TRUE)

Arguments

x1	Sample 1
x2	Sample 2
nsim	Number of simulations
plotit	If TRUE, the permutation density will be plotted

Details

Suppose we have n1 values in one group and n2 in a second, with n = n1 + n2. The permutation distribution results from taking all possible samples of n2 values from the total of n values.

Value

The p-value for the test of the hypothesis that the mean of x1 differs from x2

Author(s)

J.H. Maindonald

References

Good, P. 2000. Permutation Tests. Springer, New York.

Examples

twotPermutation()

DAAG documentation built on May 29, 2024, 9:13 a.m.