Volume 24, Number 2 (IJIEPM 2013)                   IJIEPM 2013, 24(2): 183-189 | Back to browse issues page


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Nojavan M. Nonparametric Shewhart-Type Signed-Rank with Variable Sampling Interval. IJIEPM. 2013; 24 (2) :183-189
URL: http://ijiepm.iust.ac.ir/article-1-538-en.html

Assistance professor industrial engineering.azad university south tehran branch , mnojavan@azad.ac.ir
Abstract:   (4274 Views)

Nonparametric control chart based on rank is used for detecting changes in median(mean). In this article ,Signed-rank control chart is considered with variable sampling interval. We compared the performance of Signed-rank with variable sampling interval (VSI-SR) to Signed-rank with Fixed Sampling interval (FSI-SR),the numerical results demonstrated the VSI feature is so useful. Bakir[1] showed SR chart is more efficient under heavy-tailed distributions than its parametric equivalent x-bar chart. This article include comparisons between VSI-SR and FSI x ̅ chart under light tailed distributions(the uniform and the normal) and heavy- tailed distributions(the double exponential and the Cauchy). Using VSI feature makes SR chart more sensitive under light-tailed distributions so that it can compete with x-bar chart.

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Type of Study: Research | Subject: Other related Industrial and production reserach subjects in which has direct relation to the state-of-the art of the IE
Received: 2011/04/11 | Accepted: 2013/09/28 | Published: 2013/09/28

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