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What is the formula for Control Chart Sigma when you do a capability analysis after you perform a presummarize control chart

aravindan880

Community Trekker

Joined:

Apr 5, 2016

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1 REPLY
txnelson

Super User

Joined:

Jun 22, 2012

I have scanned the JMP Book "Quality and Process Methods" and did not find a definitive answer, but my best estimation is that it is the In-Control Sigma.  Here is an excerpt from the book:

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Jim