Control Charts
The Control Charts are described in the AIAG manual, although Mesa generates
the actual charts in a different way. Mesa
generates the charts in an overlapping format, while the AIAG manual separates
them. The overlapping format is
particularly useful where relatively large numbers of operators (or equivalent)
are being studied. The Control
Charts generated by the AIAG example data set are shown below, with the first
chart being a plot of the test-retest ranges
for each part by each operator:
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