Description Usage Format Source References
Up to forty eight rats were exposed to the carcinogen retinyl acetate or to a placebo in their diet, after which the number of tumors they developed was evaluated.
1 |
A data frame with 71 observations on the following 2 variables:
y
number of rats that developed tumors
N
number of rats in group
Gail, M.H., Santner, T.J., and Brown, C.C. (1980) An analysis of comparative carcinogenesis experiments based on multiple times to tumor. Biometrics 36, 255–266.
van Hulst, R. 2018. Evaluating Scientific Evidence. ms.
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