Skip to comments.A question for you operations experts.
Posted on 09/16/2009 11:08:44 AM PDT by LouAvul
When you're developing the X double bar and R charts, and your samples go up to, say, 15, where do you get your values for the A2, D3 and D4 values?
People here at the help desk are dying over that link. I hope you’re happy. We’re going to start sending shortcuts to that to all our callers.
You should probably use an X-bar, s chart with a sample size of 15. Nonetheless, these values are available in the table section Juran’s Quality Control Handbook or any number of other good references.
Disclaimer: Opinions posted on Free Republic are those of the individual posters and do not necessarily represent the opinion of Free Republic or its management. All materials posted herein are protected by copyright law and the exemption for fair use of copyrighted works.