Control Chart Tests Based on Geometric Moving Averages

2000/02/01 by S. W. Roberts · 6 citations
Decision Sciences · #Advanced Statistical Process Monitoring

paper · doi:10.1080/00401706.2000.10485986

Abstract

A geometrical moving average gives the most recent observation the greatest weight. and all previous observations weights decreasing in geometric progression from the most recent back to the first. A graphical procedure for generating geometric moving averages is described in which the most recent observation is assigned a weight r. The properties of control chart tests based on geometric moving averages are compared to tests based on ordinary moving averages.

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