[Kubal]

Hi Darth,
Conceptually the Cpk used to predict the long term process behaviour as whether my process is capable for producing the product on long term basis. so you can’t predict on unstable process.
 
ppk is attempting to answer does my current production sample meet specification, ppk is used where statistical control can not be evaluated.
 
I hope this will help in clarifying twhat i meant.
regards
rajiv

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[Kubal]

Hi Stan.
would you like to clarify why it is wrong. it will help me better understanding of cpk and ppk concept.
 
looking for your guidance
regds
rajiv
 

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[Kubal]

cpk is calculated where the process is under statistical control, and within subgroup variation  substantial,
 
where ppk is calculated for the process which is not under the statistical control and total variation  of sample is taken for the calculation purpose
 
 
 

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[Kubal]

Please send this useful information
thanks in advance
 
rajiv

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[Kubal]

I agree, please say “Please” first.  If you want the honey, do not kick the beehive. A fellow Indian.

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[Kubal]

Hello
Am onto a procurement process exercise. Could you please share some information on how you executed the project ?
Looking forward to you response at [email protected]
Regards

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[Kubal]

Sue,
Can you share any other information you have on NVA and VA
I am looking at a 6 sigma project for improving revenue forecast
rgds,
Rajiv

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[Author]

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