Newsletter Archive - full copies of past Division newsletters

Statistics Body of Knowledge - our library content below focuses on the topics in this listing.


Open Access

A Note on EWMA

Mini paper Taken from Summer 1997 Newsletter

by Sengupta, Sumedha;

This Mini Paper gives an overview of the Exponentially Weighted Moving Averages (EWMA) and discusses some of its applications...

  • Filetype: pdf
  • Publish date: 1997-06
  • Keywords:Exponentially Weighted Moving Averages (EWMA), Control charts, Control limits, Cumulative sum control chart (CUSUM)
Open Access

Autocorrelated Data and SPC

Mini Paper Taken from the Summer 1993 Newsletter

by William H. Woodall and Frederick W. Faltin

This paper explains time dependent autocorrelation and proposes ways to deal with its effects on statistical control charts...

  • Filetype: pdf
  • Publish date: 1993-06
  • Keywords:Autocorrelation, Control charts, Shewhart chart, X bar, CUSUM chart, Exponentially weighted moving average (EWMA) chart, Residuals

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