\Header{poisons}{Animal Survival Times}
\keyword{datasets}{poisons}
\begin{Description}\relax
The \code{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.
\end{Description}
\begin{Usage}
\begin{verbatim}
data(poisons)
\end{verbatim}
\end{Usage}
\begin{Format}\relax
This data frame contains the following columns:


\describe{
\item[\code{time}] The survival time of the animal in units of 10 hours.

\item[\code{poison}] A factor with levels \code{1}, \code{2} and \code{3} giving the type of poison used.

\item[\code{treat}] A factor with levels \code{A}, \code{B}, \code{C} and \code{D} giving the treatment.
}
\end{Format}
\begin{Source}\relax
The data were obtained from


Box, G.E.P. and Cox, D.R. (1964) An analysis of transformations (with
Discussion). 
\emph{ Journal of the Royal Statistical Society, B}, \bold{26}, 211--252.
\end{Source}
\begin{References}\relax
Davison, A.C. and Hinkley, D.V. (1997) 
\emph{Bootstrap Methods and Their Application}. Cambridge University Press.
\end{References}

