8.2.57.68 tblish.dataset.ToothGrowth

Static Method: out = ToothGrowth ()

The Effect of Vitamin C on Tooth Growth in Guinea Pigs

Description

The response is the length of odontoblasts (cells responsible for tooth growth) in 60 guinea pigs. Each animal received one of three dose levels of vitamin C (0.5, 1, and 2 mg/day) by one of two delivery methods, orange juice or ascorbic acid (a form of vitamin C and coded as VC).

Format

supp

Supplement type.

dose

Dose (mg/day).

len

Tooth length.

Source

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

References

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

Crampton, E. W. (1947). The growth of the odontoblast of the incisor teeth as a criterion of vitamin C intake of the guinea pig. The Journal of Nutrition, 33(5), 491–504.

Examples

t = tblish.dataset.ToothGrowth;

tblish.examples.coplot (t, "dose", "len", "supp");

# TODO: Port Lowess smoothing to Octave