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### Nested ANOVA permutation test in R

A R function for the permutation test for onw-way nested design ANOVA.

This work is inspired by Dr. David C. Howell, University of Vermont. In Dr. Howell’s webpage “Permutation Tests for Factorial ANOVA Designs” (http://www.uvm.edu/~dhowell/StatPages/More_Stuff/Permutation%20Anova/PermTestsAnova.html [access on May 28, 2012]), he described the algorithm of permutation test for a one-way nested design ANOVA by using R language. I followed this algorithm and made a R function to do this test.

## Example

dat <- read.csv(textConnection("
trt , unit , obs
1 , 1 , 11
1 , 1 ,  9
1 , 1 ,  9
1 , 2 ,  8
1 , 2 ,  7
1 , 2 ,  6
1 , 3 ,  8
1 , 3 , 10
1 , 3 , 11
2 , 4 , 11
2 , 4 ,  8
2 , 4 ,  7
2 , 5 , 10
2 , 5 , 14
2 , 5 , 12
2 , 6 ,  9
2 , 6 , 10
2 , 6 ,  8
"))

nestedPermutationAnova(dat$obs, dat$trt, dat\$unit, 499)