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Six Sigma: Is Cpk By Itself Uninformative? Dangerous?
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- čas přidán 10. 02. 2014
- People often ask for a Cpk index, as assurance that items being produced will be satisfactory. This video shows an example of why Cpk is probably the wrong index to ask for, and that by itself, it can be misleading or dangerous.
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Links:
PMG Results Website: www.pmgresults...
Have a Question? www.pmgresutls...
QuikSigma Software Perpetual Licencse: bit.ly/2mxagk2
Basic Green Belt Certification: bit.ly/2mx5Ycw
Advanced Green Belt Certification: bit.ly/2nhg8Os
Black Belt Certification: bit.ly/2mV6Z0z
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Prediction requires stable, predictable process: 0:37
If using just one index, Ppk is best: 1:54
Cpk can be manipulated: 2:35
It is best to use the four indices in concert: 4:03
