Part 1 of this series set the stage for a critical look at the way we prepare to run a designed experiment. It also demonstrated the use of control...
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09Aug
Six Sigma, Data Mining and Dead Customer Accounts
In an interview with Quality Digest, Joseph M. Juran pointed out that quality needs to “scale up” if it is to remain a viable force in the next century....
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08Aug
The Truth About DOE, Part 1
Design of experiments (DOE) and robust design of products are key parts of the Six Sigma process. To stay competitive, we need to offer great products to customers and...
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04Aug
Thinking Outside the Box With PCA
A common problem with SPC is that the world appears too complicated for a statistical approach to work. In complex electronics products, for example, circuit boards may have thousands...
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03Aug
Preventing Hospital Falls with Six Sigma
Hospital processes produce many things. Most of them are desirable outcomes, such as healthy newborn babies, new hip joints, cancer-free patients and blood flowing freely through once-blocked coronary arteries....
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01Aug
When in Doubt, Get the X-Chart Out!
In other words, if all that are available are the percentages, the X-chart provides an excellent approximation to the P-chart.
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22Mar
Process Capability-Let’s Skip the Jargon
To many quality engineers and managers, process capability is a jumbled confusion of ideas expressed in jargon that only the anointed can understand. Let me try to clear the...
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31Oct
Pyzdek Institute Black Belt’s Book Clarifies Confusing Concepts in Statistics
In preparation for the Black Belt certification exam, he started writing his own explanations, augmented by diagrams and pictures. These helped him ace the exam (along with our training,...
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26Mar
The Future of Six Sigma 2013 Update
For those doing it right (arguably a minority, but a sizable one,) the Six Sigma approach has evolved into a new way to lead and manage an organization....
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07Oct
A Discussion of R-Square and S
With R2 no arbitrary cutoff has ever become the accepted norm.
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