ToothGrowth {datasets} | R Documentation |
The response is the length of odontoblasts (teeth) in each of 10 guinea pigs at each of three dose levels of Vitamin C (0.5, 1, and 2 mg) with each of two delivery methods (orange juice or ascorbic acid).
ToothGrowth
A data frame with 60 observations on 3 variables.
[,1] | len | numeric | Tooth length |
[,2] | supp | factor | Supplement type (VC or OJ). |
[,3] | dose | numeric | Dose in milligrams. |
C. I. Bliss (1952) The Statistics of Bioassay. Academic Press.
McNeil, D. R. (1977) Interactive Data Analysis. New York: Wiley.
coplot(len ~ dose | supp, data = ToothGrowth, panel = panel.smooth, xlab = "ToothGrowth data: length vs dose, given type of supplement")