Assessing trends in Duane plots using robust fits

García-Escudero, Luis A., Fernández, Miguel A., Oscar Duque and Angel Zorita

Reliability Engineering and System Safety, 2005, vol. 90, issue 1, 106-113

Abstract: The Duane plot is a simple and widely used graphical technique in the analysis of repairable systems. The fitting of a straight line to points in that graph serves to determine the behavior of the system assuming a power law process. However, the classical least squares fitting suffer from lack of robustness and it is specially heavily affected by the more remote and perhaps least interesting points. In order to solve this drawback we propose a robust fit based on Least Median of Squares (LMS) or Least Trimmed Squares (LTS) regression estimators of [1].

Keywords: Duane plots; Power law process; Robustness; LMS; LTS (search for similar items in EconPapers)
Date: 2005
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:90:y:2005:i:1:p:106-113

DOI: 10.1016/j.ress.2005.03.013

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