201002171500.jpg

Donald Wheeler is expert that I trust for trending advice. I took his three commercial courses on statistical analysis and adopted his methods to use in root cause analysis trending. We use his book in our Advanced Trending Techniques Course. So this article that outlines the history of one of the major techniques we teach is very interesting … at least to me!

See:

http://www.qualitydigest.com/inside/quality-insider-column/individual-charts-done-right-and-wrong.html