poisons 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

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.