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Behavior of the sampling distribution of a robust coefficient of variation for exponential samples in the presence of outliers.


Citation

Maarof, Fauziah Behavior of the sampling distribution of a robust coefficient of variation for exponential samples in the presence of outliers. In: 5th Saudi Science Conference 2012, 16-18 Apr. 2012, Al Qura University Mecca. . (Unpublished)

Abstract

A robust form of the coefficient of variation, CVr, a unitless measure of spread constructed using the median absolute deviation and the sample median, is considered for contaminated samples from several exponential distributions. The cases studied are those involving samples from exponential distribution with parameters A~0.2, I, 5 and 10, and contaminating percentages of a maximum of 40% outliers from exponential distributions with A~0.02 and 20, and from lognormal distributions with 0=0.25 and 5. Based on the bias and root mean square error, results exhibited perseverance of the robustness property of the CVr when compared to that of the conventional coefficient of variation, CVc, across all values of A and types of contaminating distributions.


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Additional Metadata

Item Type: Conference or Workshop Item (Paper)
Divisions: Faculty of Science
Notes: Full text are available at Special Collection Division Office.
Keywords: Exponential; Mean absolute deviation; Robust; Outliers.
Depositing User: Samsida Samsudin
Date Deposited: 07 May 2014 04:51
Last Modified: 18 Jun 2014 03:33
URI: http://psasir.upm.edu.my/id/eprint/27740
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