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means
2008 Feb 04
7
adding the mean and standard deviation to boxplots
Dear list,
How can I add the mean and standard deviation to each of the boxplots using the example provided in the boxplot function?
boxplot(len ~ dose, data = ToothGrowth,
boxwex = 0.25, at = 1:3 - 0.2,
subset = supp == "VC", col = "yellow",
main = "Guinea Pigs' Tooth Growth",
xlab = "Vitamin C dose mg",