40 subgroups of size 5 containing diameter measurements of piston rings. This data set is used extensively in statistical process control textbooks and throughout the IQCC package to illustrate \(\bar{X}\), \(R\), and \(S\) charts.
Format
A data frame with 40 observations on the following 5 variables.
- V1
The first measure.
- V2
The second measure.
- V3
The third measure.
- V4
The fourth measure.
- V5
The fifth measure.
Source
Montgomery, D. C. (2009). Introduction to Statistical Quality Control, 6th ed. Wiley. ISBN 978-0-470-16992-6.
Examples
data(pistonrings)