ex0621: Failure Times of Bearings

In Sleuth2: Data Sets from Ramsey and Schafer's "Statistical Sleuth (2nd Ed)"

Failure Times of Bearings

Description

Data consist of times to fatigue failure (in units of millions of cycles) for 10 high-speed turbine engine bearings made from five different compounds.

Usage

ex0621

Format

A data frame with 50 observations on the following 2 variables.

Time

failure times of bearings (millions of cycles)

Compound

a factor with levels "I", "II", "III", "IV" and "V"

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

McCool, J.I. (1979). Analysis of Single Classification Experiments Based on Censored Samples from the Two-parameter Weibull Distribution, Journal of Statistical Planning and Inference 3(1): 39–68.

Examples

str(ex0621)

Sleuth2 documentation built on May 29, 2024, 7:37 a.m.