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2012 Sep 11
0
how to perform multiple comparisons with anova.glm significant interactions?
...Reserve) DivBoulders <- rep (c(1.23,2.4,1.26,1.78,1.97,1.35,1.23,2.4,1.26,1.78), 20) Roughness <- rep(c(3.45,2.56,1.32,5.67,3.73,3.57,2.66,1.52,7.67,2.73),20) Biomass <- rep(c(8,5.3,3.5,12,25.4,10.1,9.8,2.4,5.6,5.3),20) myData <- data.frame (fReserve ,DivBoulders ,Roughness ,Biomass ) glmTest <- glm (sqrt(Biomass) ~ fReserve * DivBoulders * Roughness, family=gaussian, data=myData) plot (glmTest) anova (glmTest, test="F") # How could I hypothetically test multiple comparisons among the 3 predictors (when only one is a factor)? (or something that can help me to understrand w...