Description Usage Format References Examples

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

1 | ```
data("insulation")
``` |

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

`log.stress`

log of voltage stress

`log.time`

log of failure time

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

1 2 3 4 5 | ```
myscores <- logGFscores
myscores@param <- c(1,5)
fit <- rfit(log.time ~ log.stress,scores=myscores,data=insulation)
summary(fit)
fit$tauhat
``` |

```
Loading required package: Rfit
Call:
rfit.default(formula = log.time ~ log.stress, data = insulation,
scores = myscores)
Coefficients:
Estimate Std. Error t.value p.value
(Intercept) 63.9971 6.5205 9.8147 4.890e-15 ***
log.stress -17.6728 1.8642 -9.4801 2.073e-14 ***
---
Signif. codes: 0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
Overall Wald Test: 89.87235 p-value: 0
[1] 1.570054
```

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