survival  R Documentation 
Survival of Rats after Radiation Doses
Description
The survival
data frame has 14 rows and 2 columns.
The data measured the survival percentages of batches of rats who were given varying doses of radiation. At each of 6 doses there were two or three replications of the experiment.
Usage
survival
Format
This data frame contains the following columns:
dose

The dose of radiation administered (rads).
surv

The survival rate of the batches expressed as a percentage.
Source
The data were obtained from
Efron, B. (1988) Computerintensive methods in statistical regression. SIAM Review, 30, 421–449.
References
Davison, A.C. and Hinkley, D.V. (1997) Bootstrap Methods and Their Application. Cambridge University Press.