Data :: ToothGrowth
https://stat.ethz.ch/R-manual/R-patched/library/datasets/html/ToothGrowth.html
Vitamin C에 따른 기니피그의 치아성장 효과 (The Effect of Vitamin C on Tooth Growth in Guinea Pigs)
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. doi: 10.1093/jn/33.5.491.
Format
60마리 기니피그에 대한 3개의 variable
| [,1] | len | numeric | Tooth length | 치아(모세포)길이 |
| [,2] | supp | factor | Supplement type (VC or OJ). | 비타민 종류(수용성비타민 or 오렌지주스) |
| [,3] | dose | numeric | Dose in milligrams/day | 복용량 1~3개 dose (0.5, 1, and 2 mg/day) |
Examples
require(graphics)
coplot(len ~ dose | supp, data = ToothGrowth, panel = panel.smooth,
xlab = "ToothGrowth data: length vs dose, given type of supplement") 
