\HeaderA{hirose}{Failure Time of PET Film}{hirose}
\keyword{datasets}{hirose}
\begin{Description}\relax
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.
\end{Description}
\begin{Usage}
\begin{verbatim}
hirose
\end{verbatim}
\end{Usage}
\begin{Format}\relax
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.
}
\end{Format}
\begin{Source}\relax
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.
\end{Source}
\begin{References}\relax
Davison, A.C. and Hinkley, D.V. (1997) 
\emph{Bootstrap Methods and Their Application}. Cambridge University Press.
\end{References}