ToothGrowth

The Effect of Vitamin C on Tooth Growth in Guinea Pigs

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).

Keywords
datasets
Usage
ToothGrowth
Format

A data frame with 60 observations on 3 variables.

[,1] len numeric
Tooth length [,2] supp
factor Supplement type (VC or OJ). [,1]

Source

C. I. Bliss (1952) The Statistics of Bioassay. Academic Press.

References

McNeil, D. R. (1977) Interactive Data Analysis. New York: Wiley.

Aliases
  • ToothGrowth
Examples
library(datasets) require(graphics) coplot(len ~ dose | supp, data = ToothGrowth, panel = panel.smooth, xlab = "ToothGrowth data: length vs dose, given type of supplement")
Documentation reproduced from package datasets, version 3.1.2, License: Part of R 3.1.2

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