A
Audit Monkey
I need some help understanding a point in the AIAG SPC manual. The manual states the following: "High-speed, automated processes are often found to exhibit autocorrelation on some characteristics. This is often because there is an underlying predictable special cause variation which is large when compared to the common cause variation."
Question: Why is there an assumption that it is special cause, not common cause? Experience?
Question: Why is there an assumption that it is special cause, not common cause? Experience?