survival {SMPracticals}

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

data(survival)

Format

A data frame with 14 observations on the following 2 variables.

dose

The dose of radiation administered (rads).

surv

The survival rate of the batches expressed as a percentage.

Source

Efron, B. (1988) Computer-intensive methods in statistical regression. SIAM Review, 30, 421-449.

References

Davison, A. C. (2003) Statistical Models. Cambridge University Press. Page 376.

Examples

data(survival)
plot(survival$dose,survival$surv,log="y")  # note the obvious outlier
lm(log(surv)~dose,data=survival)