Economic design of non parametric sign control chart

S. H. Patil and D. T. Shirke

Communications in Statistics - Theory and Methods, 2017, vol. 46, issue 18, 8987-8998

Abstract: An economic design of sign chart to control the median is proposed. Since the sign chart is distribution free, it can easily be applied to any process without prior knowledge of process quality distribution. The effect on loss cost observed for different shifts in location shows that the sign chart performs better for large shifts. The economic statistical performance study reveals that statistical performance of sign chart can be improved sufficiently for moderate shifts in the process. Sensitivity study shows that design is more sensitive for change in values of penalty loss cost and time required for search and repair of an assignable cause.

Date: 2017
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DOI: 10.1080/03610926.2016.1200095

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