Recent content by Johnc16

Zeke, Upper Limit Cpk = [U.L - process mean]/3std Lower Limit Cpk = [Process mean - L.L]/3std Cpk = min of Upper or Lower Maybe that helps.

Thank you for the reply GregLock. I am a new Process Engineer fresh out of college in the automotive industry. I have been doing some Cp & Cpk studies recently. I do know the significance of that value in terms of "is your process capable?" or "how close to center it is?". Although, I was just...

Where does the value 1.33 come from when calculating Cp and Cpk ?