O
OmarEn
Hello guys,
I have a question about a Cpk output.
My two control charts (Mean/Range) are in control. No points beyond control limits, my histogram looks well, similar to a normal bell, symmetrical. Cpk and Ppk indices meet my customer's expectations too.
But P-value is less than 0.05. How can I explain to management that even when everything else seems to be OK, the capability study actually fails? and more important... Their question would be: What part of the process is necessary to fix if Cpk, Ppk, control charts, even distribution are OK?
Thanks all for your time in answering my question.
Best Regards.
I have a question about a Cpk output.
My two control charts (Mean/Range) are in control. No points beyond control limits, my histogram looks well, similar to a normal bell, symmetrical. Cpk and Ppk indices meet my customer's expectations too.
But P-value is less than 0.05. How can I explain to management that even when everything else seems to be OK, the capability study actually fails? and more important... Their question would be: What part of the process is necessary to fix if Cpk, Ppk, control charts, even distribution are OK?
Thanks all for your time in answering my question.
Best Regards.