EqSRounded {DTDA}

Equipment-S Rounded Failure Time Data

Description

Digitized data from Figure 2 in Ye and Tang 2016. The dataset contains (rounded) observations of 174 failure times of certain devices, observed under interval sampling. Right-runcation is years between installation and 2011 and left truncation corresponds to right-truncation time minus 15 years. The failure time is doubly truncated due to the interval sampling.

Usage

data("EqSRounded")

Format

A data frame with 174 observations on the following 3 variables.

X

a numeric vector, time to failure in years.

U

a numeric vector, the number of years between installation and 2011 minus 15 years.

V

a numeric vector, the number of years between installation and 2011.

Source

Digitalization of the data plot in the original paper of Ye and Tang 2016.

References

Ye ZS and Tang LC (2016) Augmenting the unreturned for field data with information on returned failures only. Technometrics 58, 513-523.

Examples

data(EqSRounded)
str(EqSRounded)