Data normality versus capability

Dan Watson

Involved In Discussions
His definition of "Capable" processes is if the histogram appears bell shaped and the Cpk is greater the 1.33. No control charts to look for special causes happening in the process.
 

Steve Prevette

Deming Disciple
Leader
Super Moderator
His definition of "Capable" processes is if the histogram appears bell shaped and the Cpk is greater the 1.33. No control charts to look for special causes happening in the process.

Are you referring to Dr. Wheeler when you say "his" and what is the source of the definition in question? Thanks,
 
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