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Multiple comparison of means - using R

Multiple comparison of means

All pairwise comparisons with Tukey's Honestly Significant Difference

Gives something like this:

Tukey multiple comparisons of means 95% family-wise confidence level Fit: aov(formula = lm(log(con) ~ trt, vetjoh)) $trt diff lwr upr p adj B-A -0.2461650 -0.5338651 0.04153517 0.1081573 C-A -0.4277022 -0.6963277 -0.15907673 0.0008558 C-B -0.1815373 -0.4667678 0.10369329 0.2857137