Survival of Rats after Radiation Doses

SUMMARY:
       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.

DATA DESCRIPTION:
       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) Computer-intensive methods in statistical
       regression.  SIAM Review, 30, 421-449.

OTHER REFERENCES:
       Davison, A.C. and Hinkley, D.V. (1997)  Bootstrap  Methods
       and Their Application. Cambridge University Press.