Latest Developments in Variation Research, Reliability, and Weibull Statistics

Leonard G. Johnson, Editor                                                                      Wang H. Yee, Director

 STATISTICAL BULLETIN

(Variation Research and Reliability)

Back in April of 1971, the Detroit Research Institute launched an unique practical statistical bulletin, showing the latest developments in Weibull statistics, Reliability, and Variation Research. ASQC Fellow, Leonard G. Johnson, leading contributor to the most dynamic research in product reliability, has been the editor of the Bulletin, which has published eight issues per year from 1971 - 1999. He was with GM Research Laboratories and a Reliability Consultant and instructor for Detroit Research Institute from 1962 - 2000.  He's a leading expert in the application of advanced statistical techniques to the solution of complex industrial and business problems.  His work on life testing statistics and reliability has received world-wide recognition and especially for his energetic promotion of the practical use of the Weibull Distribution and Statistical Entropy Method in the automotive industry. He has authored two books:Statistical Treatment of Fatigue Experiments and Theory and Technique of Variation Research, and as numerous papers on statistics and reliability, and has been a pioneer in Weibull analysis and other practical statistical methods with engineering and industrial applications.

This is truly a unique publication for nowhere else can there be found such down-to-earth discussions of statistical problems which plague engineering and management organizations.

The systematic collection and analysis of empirical data and the extrapolation of the results to complex processes is the most characteristic form of Variation Research - a branch of mathematical statistics which has become almost inseparable from the manifold activities of modern industry and business.  What was once an auxiliary check on output or a useful guide to potential now forms the very foundation of such essential practices as quality management , reliability testing, and healthcare planning.

The lucid study of the theory and techniques of variation research sets out to illuminate the mathematical principles on which it is based, and to bring them within the grasp of a wider section of industrial and business managements.

The Bulletin was suspended in 1999 after 28 years of publication. The Bulletin is of such a great need in industry and business that we felt it necessary to publish the important topics of the Bulletin in this website  in order that interested people would have it available as a reference.

All in all, the DRI's Statistical Bulletin provides practical answers to difficult statistical questions which are encountered in the work-a-day world of business and industry.

We are making our utmost effort to maintain and upgrade our site. However as we are running a free website we are facing financial difficulties, especially in paying our server and hosting fees.

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Wang H. Yee, Director

whyee1@detroitresearch.com

Telephone: (313) 820-4459