When the Bell Curve Doesn’t Fit, Part 2
The first part of this article illustrated the kinds of problems that can happen when data from non-normal processes are plotted on traditional control charts, and wh
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The first part of this article illustrated the kinds of problems that can happen when data from non-normal processes are plotted on traditional control charts, and wh
(CSA Group: Toronto) -- To speed entry for solar panel manufacturers into the North American and international markets, a new a photovoltaic (PV) certification test company, CFV Solar Test Laboratory, has opened in Albuquerque, New Mexico, of
(SAE: Warrendale, PA) -- Readers and editors of SAE International’s Automotive Engineering International (AEI) magazine have selected the 2011 Chevrolet Volt as the “Best Engineered Vehicle of 2011.” The announcement was made during the S
Back in 1986 I documented a list of 13 fundamental truths that applied to all organizations. I ran across these statements recently when I was looking for some comments made by a past IBM president that I wanted to use in a new book I am writing.
Leaders and managers are faced with difficult decisions every day. Even process-level decisions must be made with the firm’s overall strategy in mind.
My March 30, 2011 article ended with wisdom from Yogi Berra as a warning to the quality profession.
“Under-promise, over-deliver” is a phrase taught to me many years ago by my friend and colleague, PQ Systems’ owner Michael J. Cleary. It may have always been true. It may always be true. It is certainly true today.
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(University of Michigan: Ann Arbor, MI) -- With its
A normal distribution is far more common in statistical textbooks than it is in real-world processes, and untold grief results from the unquestioning assumption that all manufacturing processes follow the bell curve. The grief consists specifically of:
Air gauging has roots going back more than 70 years and is today a viable and highly reliable method for many industrial applications where a high volume of parts is produced, or where the precision of hard-to-access dimensions makes other measuring techniques impo
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