In an experiment,
turbine wheels were run for a number of hours,
and the number of fissures developed was counted
Usage
data(turbines)
Arguments
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.
References
The original source is
Wayne Nelson (1982) Applied Life Data, Wiley, 407--409.