U
Uchiha
Hello all,
I have a question about process capability indexes:
I believe that the definitions of Cpk and Ppk are different depending on the countries (USA, Germany, Japan, France...). Is it possible to have a clear and simple explanation about these differences? (Especially if it is only the simple long vs. short term consideration)
Also by saying "countries" I believe this especially include national standards... What about international standards then? I had the chance to take a look at the ISO 22514-2 (new for the old ISO 21747) and I got even more confused as it does not seem that it deals with the long vs. short term issue but has a completely different view...
Can anyone clarify a bit more?
Thank you very much and I do apologize if this issue was already discussed before
I have a question about process capability indexes:
I believe that the definitions of Cpk and Ppk are different depending on the countries (USA, Germany, Japan, France...). Is it possible to have a clear and simple explanation about these differences? (Especially if it is only the simple long vs. short term consideration)
Also by saying "countries" I believe this especially include national standards... What about international standards then? I had the chance to take a look at the ISO 22514-2 (new for the old ISO 21747) and I got even more confused as it does not seem that it deals with the long vs. short term issue but has a completely different view...
Can anyone clarify a bit more?
Thank you very much and I do apologize if this issue was already discussed before