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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