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1.5 Sigma shift - goofy!

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50% of polled quality professionals indicated that they are not aware of why a process may shift 1.5 sigma. My goal is to explain it here.

On the other hand ….

The 1.5 sigmas added to the name Six Sigma are arbitrary and they are called “1.5 sigma shift” (SBTI Black Belt material, ca 1998). Dr. Donald Wheeler dismisses the 1.5 sigma shift as “goofy”.

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This entry was posted on Wednesday, October 24th, 2007 at 5:08 pm and is filed under thoughts. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.


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