Deming would say all of business occurs within 3 standard deviations of the mean. 3 DPMO (99.9997% is 6-Sigma) I think the coincidence factor would move us beyond common cause variation into special cause variation… Math is fun!
Deming would say all of business occurs within 3 standard deviations of the mean. 3 DPMO (99.9997% is 6-Sigma) I think the coincidence factor would move us beyond common cause variation into special cause variation… Math is fun!