poisons                 package:boot                 R Documentation

Animal Survival Times

Description:

     The 'poisons' data frame has 48 rows and 3 columns.

     The data form a 3x4 factorial experiment, the factors being three
     poisons and four treatments.  Each combination of the two factors
     was used for four animals, the allocation to animals having been
     completely randomized.

Usage:

     data(poisons)

Format:

     This data frame contains the following columns:

     'time' The survival time of the animal in units of 10 hours.

     'poison' A factor with levels '1', '2' and '3' giving the type of
          poison used.

     'treat' A factor with levels 'A', 'B', 'C' and 'D' giving the
          treatment.

Source:

     The data were obtained from

     Box, G.E.P. and Cox, D.R. (1964) An analysis of transformations
     (with Discussion).  _ Journal of the Royal Statistical Society,
     B_, *26*, 211-252.

References:

     Davison, A.C. and Hinkley, D.V. (1997)  _Bootstrap Methods and
     Their Application_. Cambridge University Press.

