Statistical Process Control
Theory and practice
Description:... Statistical process control (SPC) is now recognized as having a very important role to play in modern industry. Our aim in this book has been to present SPC techniques in a simple and clear way, and also to present some of the underlying theory and properties of the techniques. This volume arises partly out of a revision of Wetherill (1977), and partly out of experience in teaching and implementing SPC at industrial sites, especially with ICI. It would have been impossible to come to our present understanding of this field without the joint efforts of industry and university. A number of features of this book are new: (1) The special emphasis on process industry problems, including one at-a-time data. (2) The discussion of between and within-group variation, and the effects of this on charting and on process capability analysis. (3) The derivation of the properties of the techniques has not been gathered together before. (4) The presentation of sampling by variables contains many new features. The techniques themselves are presented in a very simple way by using 'method summaries', and these could be a basis for training when SPC is implemented.
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