Improving Performance Through Statistical Thinking:
, Stuart J. Janis and Janice E. Shade. This book
presents a clear and practical explanation of statistical thinking without the typical equations and
formulas.
Six Sigma Black Belts: What Do They Need to Know
 
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Roger Hoerl, Manager of the Applied Statistics Group at GE, provides a context and forum for discussion of the technical skills required by Six Sigma BBs, with the hope of reaching a general consensus. An excellent artile.
One Perspective on the Future of Six-Sigma
 
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Six-Sigma has maintained momentum for over ten years now, longer than many pundits expected. However, the key question remains: how long will Six-Sigma remain front-page news? The answer is that it will remain front-page news as long as it delivers front-