ToothGrowth

From datasets v3.2.2 by R-core R-core@R-project.org

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.

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 3.2.2, License: Part of R 3.2.2

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