The Six Sigma Handbook Revised and Expanded - THOMAS PYZDEK - V2 - #2/2

DMAIC

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12 CHAPTER

Statistical Process Control Techniques STATISTICAL PROCESS CONTROL (SPC) Types of control charts There are two broad categories of control charts: those for use with continuous data (e.g., measurements) and those for use with attributes data (e.g., counts). This section describes the various charts used for these different data.

VARIABLE CHARTS In statistical process control (SPC), the mean, range, and standard deviation are the statistics most often used for analyzing measurement data. Control charts are used to monitor these statistics. An out-of-control point for any of these statistics is an indication that a special cause of variation is present and that an immediate investigation should be made to identify the special cause.

Averages and ranges control charts Averages charts are statistical tools used to evaluate the central tendency of a process over time. Ranges charts are statistical tools used to evaluate the dispersion or spread of a process over time. Copyright 2003 by The McGraw-Hill Companies, Inc. Click Here for Terms of Use.

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The Six Sigma Handbook Revised and Expanded - THOMAS PYZDEK - V2 - #2/2

Published on Apr 29, 2016

ahmad fikry

Part 2/2 - From Chapt. 12 to the end of the book. -------------------------------------- Introduction: ========== The goal of this book remains the same as for the first edition, namely, to provide you with the comprehensive guidance and direction necessary to realize Six Sigma’s promise, while avoiding traps and pitfalls commonly encountered. In this book you will find a complete overview of the management and organization of Six Sigma, the philosophy which underlies Six Sigma, and those problem solving techniques and statistical tools most often used in Six Sigma. It is not intended to be an ASQ certification study guide, although it includes coverage of most of the topics included in the ASQ body of knowledge. Rather it is intended as a guide for champions, leaders, ‘‘belts,’’ team members and others interested in using the Six Sigma approach to make their organizations more efficient, more effective, or both. In short, it is a user’s manual, not a classroom textbook.