R
Ricardo SKF INTERN
Re: Sampling plans and Cpk - Some way to calculate the sample quantity
Hello Bob,
I’m sorry for taking so long to reply.
I ended up using the confidence limits of Cpk to calculate the minimum n for an expected Observed Cpk (Kushler, R.H. and Hurley, P. "Confidence Bounds for Capability Indices." Journal of Quality Technology 24, 1992, 216–231).
I read some about the Xhi-LoR charts you suggested but I didn't propose them because it was a matter of interests and I had to work with restrictions and make things with what was told me.
Now that I have ended that task I’m going to analyze your suggestion.
What do you mean by run? (I'm sorry, I’m not native English speaker and sometimes I may confuse technical terms)
Best regards,
Ricardo.
Hello Bob,
I’m sorry for taking so long to reply.
I ended up using the confidence limits of Cpk to calculate the minimum n for an expected Observed Cpk (Kushler, R.H. and Hurley, P. "Confidence Bounds for Capability Indices." Journal of Quality Technology 24, 1992, 216–231).
I read some about the Xhi-LoR charts you suggested but I didn't propose them because it was a matter of interests and I had to work with restrictions and make things with what was told me.
Now that I have ended that task I’m going to analyze your suggestion.
What do you mean by run? (I'm sorry, I’m not native English speaker and sometimes I may confuse technical terms)
Best regards,
Ricardo.