Chapter 16. Cusum Analysis for Detecting Process Changes

  1. Richard Boddy and
  2. Gordon Smith

Published Online: 10 AUG 2009

DOI: 10.1002/9780470749296.ch16

Statistical Methods in Practice: for Scientists and Technologists

Statistical Methods in Practice: for Scientists and Technologists

How to Cite

Boddy, R. and Smith, G. (2009) Cusum Analysis for Detecting Process Changes, in Statistical Methods in Practice: for Scientists and Technologists, John Wiley & Sons, Ltd, Chichester, UK. doi: 10.1002/9780470749296.ch16

Author Information

  1. Statistics for Industry, UK

Publication History

  1. Published Online: 10 AUG 2009
  2. Published Print: 14 AUG 2009

ISBN Information

Print ISBN: 9780470746646

Online ISBN: 9780470749296

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Keywords:

  • cusum analysis in process change detection;
  • past data analysis;
  • Globrightly and studio lamp production;
  • cusum plot of light intensity;
  • deviation column cumulative sum;
  • cusum calculations and intensity data;
  • localised standard deviation;
  • localised standard deviation computation;
  • significance test;
  • eliminating step changes in intensity

Summary

This chapter contains sections titled:

  • Introduction

  • Analysing past data

  • Intensity

  • Localised standard deviation

  • Significance test

  • Yield

  • Conclusions from the analysis

  • Problem