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Projections and the U(2) Multivariate Control Chart

Summary: [This abstract is based on the author's abstract.]

A projection approach to designing multivariate control schemes results in a chart that is easy to compute and design and has greater sensitivity than a chi-square chart for the assignable cause under study. Additionally, the chart can be analyzed using central and noncentral chi square distributions when the process is on-target and off-target, respectively.

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  • Topics: Statistical Process Control (SPC)
  • Keywords: Average run length (ARL),Chi-square statistics,Multivariate control charts,Statistical process control (SPC)
  • Author: Runger, George C.
  • Journal: Journal of Quality Technology