A Design Tool to Evaluate Average Time to Signal Properties of Adaptive X Charts

Article

Prabhu, Sharad S.; Montgomery, Douglas C.; Runger, George C.   (1995, ASQC)   SAS Institute Inc., Cary, NC; Arizona State University, Tempe, AZ; University of Maryland, College Park, MD

Journal of Quality Technology    Vol. 27    No. 1
QICID: 11401    January 1995    pp. 74-76
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Article Abstract

This paper presents a BASIC computer program which can assist a user in designing a two-sided X control chart with adaptive features such as adaptive sample sizes, adaptive sampling intervals, or combined adaptive sample sizes and sampling intervals. The program generates the threshold limit to switch the adaptive design parameters, the mean false alarm rate, and the out-of-control average time to signal an off-target process for various magnitude of shifts as specified by the user.

Keywords

Estimation,Average run length (ARL),Average time to signal,Control charts,Statistical process control (SPC),Quality control (QC),Sample size,Sampling interval


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