insulation {npsm}

Insulating Fluid Data

Description

Study the breakdown time of an electrical insulating fluid subject to seven different levels of voltage stress.

Usage

data("insulation")

Format

A data frame with 76 observations on the following 2 variables.

log.stress

log of voltage stress

log.time

log of failure time

Source

Nelson, W. (1982), Applied lifetime data analysis, New York: John Wiley and Sons.

Lawless, J.F. (1982), Statistical models and methods for lifetime data, New York: John Wiley and Sons.

References

Hettmansperger, T.P. and McKean J.W. (2011), Robust Nonparametric Statistical Methods, 2nd ed., New York: Chapman-Hall.

Examples

myscores <- logGFscores
myscores@param <- c(1,5)
fit <- rfit(log.time ~ log.stress,scores=myscores,data=insulation)
summary(fit)
fit$tauhat