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Exact Solution for Average Run Length of CUSUM Charts for MA(1) Process


Paper Type 
Contributed Paper
Title 
Exact Solution for Average Run Length of CUSUM Charts for MA(1) Process
Author 
Kanita Petcharat[a], Yupaporn Areepong*[a], Saowanit Sukparungsee[a] and Gabriel Mititelu[b]
Email 
yupaporna@kmutnb.ac.th
Abstract:
 In this paper we apply Fredhom type integral equations method to derive explicit formula of the average run length (ARL) for a Cumulative Sum (CUSUM) chart, when observations are described by a first order moving average MA(1) process, with exponential white noise. We compare the computational time between our analytical explicit expressions for the ARL performance with the one obtained via Gauss-Legendre numerical scheme for integral equations.  We found that those methods are in excellent agreement however, the computational time of the former takes approximately 1 second while the latter method consumes the computational time 11 minutes approximately.

Start & End Page 
1449 - 1456
Received Date 
2012-07-16
Revised Date 
Accepted Date 
2013-11-11
Full Text 
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Keyword 
Statistical Process Control, Cumulative Sum, Moving Average Observation, Average Run Length, Fredholm Type Integral Equations, Numerical Approximations
Volume 
Vol.41 No.5/2 (OCTOBER 2014)
DOI 
Citation 
Petcharat[a] K., Areepong*[a] Y., Sukparungsee[a] S. and Mititelu[b] G., Exact Solution for Average Run Length of CUSUM Charts for MA(1) Process, Chiang Mai Journal of Science, 2014; 41(5/2): 1449-1456.
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