Stochastics and Quality Control, Year (2020-2)

Title : ( MAD Control Chart for Autoregressive Models with Skew-Normal Distribution )

Authors: VAHIDEH GORGIN , Bahram Sadeghpour Gildeh ,

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Abstract

The major problem in analyzing control charts is to work with autocorrelated data. This problem can be solved by fitting a suitable model to the data and using the control chart for the residuals. The problem becomes very important, when the distribution of observation is nonnormal, in addition to being autocorrelated. Much recent research has focused on the development of appropriate statistical process control techniques for the autocorrelated data or nonnormal distribution, but few studies have considered monitoring the process mean of both nonnormal and autocorrelated data. In this paper, a simulation study is conducted to compare the performances of the control chart based on the median absolute deviation method (MAD) with those of existing control charts for the skew normal distribution. Simulation results indicate considerable improvement over existing control charts for nonnormal data can be achieved when the control charts with control limits based on the MAD method are used to monitor the process mean of nonnormal autocorrelated data.

Keywords

, Autocorrelated Data, Control Chart, Weighted Standard Deviation Method, Weighted Variance Method, Skew Normal, Median Absolute Deviation
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@article{paperid:1078802,
author = {GORGIN, VAHIDEH and Sadeghpour Gildeh, Bahram},
title = {MAD Control Chart for Autoregressive Models with Skew-Normal Distribution},
journal = {Stochastics and Quality Control},
year = {2020},
month = {February},
issn = {2367-2390},
keywords = {Autocorrelated Data; Control Chart; Weighted Standard Deviation Method; Weighted Variance Method; Skew Normal; Median Absolute Deviation},
}

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%0 Journal Article
%T MAD Control Chart for Autoregressive Models with Skew-Normal Distribution
%A GORGIN, VAHIDEH
%A Sadeghpour Gildeh, Bahram
%J Stochastics and Quality Control
%@ 2367-2390
%D 2020

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