Performance of the Control Chart Trend Rule Under Linear Shift

Article

Davis, Robert B.; Woodall, William H.   (1988, ASQC)   University of Southwestern Louisiana

Journal of Quality Technology    Vol. 20    No. 4
QICID: 5597    October 1988    pp. 260-262
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Article Abstract

Approximate average run lengths of Shewhart charts using various trend rules are presented. It is shown that the trend rule is not effective in detecting a linear shift in the mean of the monitored process.

Keywords

Shewhart control chart,Average run length (ARL),Statistical process control (SPC)


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