Four materials (A, B, C, D) used in permanent press garments were subjected to a test for shrinkage. The four materials were placed in a heat chamber with with four settings (pos). The test was then conducted in four runs (run).
data(garments)A data frame with 16 observations on the following 4 variables.
runTest run, a factor with levels 1 2 3 4
posHeat position, a factor with levels 1 2 3 4
matFabric materials, a factor with levels A B C D
shrinkShrinkage measure, a numeric vector