dose
| The dose of radiation administered (rads). |
surv
| The survival rate of the batches expressed as a percentage. |
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.
Efron, B. (1988) Computer-intensive methods in statistical regression. SIAM Review, 30, 421-449.