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Statistical Methods for Quality Improvement, Third Edition by THOMAS P. RYAN

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Preface

The field of statistical methods applied to quality improvement continues to evolve and there has been an attempt to parallel this development with the editions of this book.

For the control chart chapters, Chapter 9 on multivariate control charts has grown considerably, with several new sections and many additional references.

There is also a major addition to Chapter 12. Within the past 10 years there has been considerable research on the monitoring of linear profiles and other types of profiles. Section 12.9, a moderately long section, was added to cover this new material.

A major addition to the chapter on attribute control charts (Chapter 6) has been the sections on how to use software such as MINITAB® to obtain probability limits for attribute charts, with this addition motivated by reader feedback. That chapter also contains 15 new references.

Two sections were added to the chapter on process capability indices, Chapter 7, in addition to 16 new references.

Chapter 8, on alternatives to Shewhart charts, has been expanded considerably to include sections on the effects of parameter estimation on the properties of CUSUM and EWMA procedures, in addition to information on certain freeware that can be used to aid in the design of CUSUM procedures. Following the recommendation of a colleague, a section on generalized likelihood ratio charts (Section 8.5) has also been added, in addition to 28 new chapter references.

An important, although brief, section on conditional effects ...

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