| waste {multcomp} | R Documentation |
Industrial waste output in a manufactoring plant.
data("waste")
This data frame contains the following variables
low, medium, high.env1 ... env5.
The data are from an experiment designed to study the effect of temperature
(temp) and environment (envir) on waste output in a manufactoring plant.
Two replicate measurements were taken at each temperature / environment combination.
P. H. Westfall, R. D. Tobias, D. Rom, R. D. Wolfinger, Y. Hochberg (1999). Multiple Comparisons and Multiple Tests Using the SAS System. Cary, NC: SAS Institute Inc., page 177.
### set up two-way ANOVA with interactions
amod <- aov(waste ~ envir + temp + envir*temp, data=waste)
### set up linear hypotheses for all-pairs of both factors
wht <- glht(amod, linfct = mcp(temp = "Tukey", envir = "Tukey"))
### cf. Westfall et al. (1999, page 181)
summary(wht, test = adjusted("Shaffer"))