\name{hirose}
\alias{hirose}
\title{
Failure Time of PET Film
}
\description{
The \code{hirose} data frame has 44 rows and 3 columns.


PET film is used in electrical insulation.  In this accelerated life test
the failure times for 44 samples in gas insulated transformers.  4 different
voltage levels were used.
}
\usage{
hirose
}
\format{
This data frame contains the following columns:


\describe{
\item{\code{volt}}{
The voltage (in kV).
}
\item{\code{time}}{
The failure or censoring time in hours.
}
\item{\code{cens}}{
The censoring indicator; \code{1} means right-censored data.
}}}
\source{
The data were obtained from


Hirose, H. (1993) Estimation of threshold stress in accelerated life-testing.
\emph{IEEE Transactions on Reliability}, \bold{42}, 650--657.
}
\references{
Davison, A.C. and Hinkley, D.V. (1997) 
\emph{Bootstrap Methods and Their Application}. Cambridge University Press.
}
\keyword{datasets}
% Converted by Sd2Rd version 1.15.