Maravelakis, Petros and Panaretos, John and Psarakis, Stelios (2004): EWMA Chart and Measurement Error. Published in: Journal of Applied Statistics , Vol. 31, No. 4 (2004): pp. 445-455.
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Measurement error is a usually met distortion factor in real-world applications that influences the outcome of a process. In this paper, we examine the effect of measurement error on the ability of the EWMA control chart to detect out-of-control situations. The model used is the one involving linear covariates. We investigate the ability of the EWMA chart in the case of a shift in mean. The effect of taking multiple measurements on each sampled unit and the case of linearly increasing variance are also examined. We prove that, in the case of measurement error, the performance of the chart regarding the mean is significantly affected.
|Item Type:||MPRA Paper|
|Original Title:||EWMA Chart and Measurement Error|
|Keywords:||Exponentially weighted moving average control chart, Average run length, Average time to signal, Measurement error, Markov chain, Statistical process control|
|Subjects:||C - Mathematical and Quantitative Methods > C1 - Econometric and Statistical Methods and Methodology: General|
|Depositing User:||J Panaretos|
|Date Deposited:||20. Dec 2007 12:20|
|Last Modified:||21. Feb 2013 11:35|