turbines {GLMsData}

Fissures in turbine wheels

Description

In an experiment, turbine wheels were run for a number of hours, and the number of fissures developed was counted

Usage

data(turbines)

Format

A data frame with 11 observations on the following 3 variables.

Hours

the number of hours the turbine was run; a numeric vector

Turbines

the number of turbines run for the given amount of hours; a numeric vector

Fissures

the number of turbines wheels with fissures; a numeric vector

Details

The data give the midpoints of running times; that is, the first row (where Hours=400) actually corresponds to a running time of 0 to 800 hours. The final class is 4400+ hours, taken as 4600 for convenience.

Source

Raymond H. Myers, Douglas C. Montgomery, and G. Geoffrey Vining (2002) Generalized linear models with applications in engineering and the sciences, Wiley.

References

The original source is Wayne Nelson (1982) Applied Life Data, Wiley, 407–409.

Examples

data(turbines)
summary(turbines)