Appendix 2

Factors for Control Charts

img
img

An asterisk indicates that the corresponding chart limit is set to zero.

When using ranges an estimate of process standard deviation is:

img

When using standard deviations a recommended estimate of process standard deviation, discussed in Chapter 5, is:

img

Get Six Sigma Quality Improvement with Minitab, Second Edition now with the O’Reilly learning platform.

O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.