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On Discordance Tests for the Wrapped Cau-chy Distribution

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DOI: 10.4236/ojs.2015.54026    2,707 Downloads   3,077 Views  

ABSTRACT

Circular data as any other types of data are subjected to contamination with some unexpected observations which are known outliers. In this paper, four tests of discordancy for circular data based on M, C, D, and A statistics are extended to the wrapped Cauchy distribution to detect possible outliers. The cut-off points and the power of performances are investigated via extensive simulation study. Results show that tests perform better as the concentration of the samples is increased. Two real circular data sets are analysed for illustration.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Abuzaid, A. , El-hanjouri, M. and Kulab, M. (2015) On Discordance Tests for the Wrapped Cau-chy Distribution. Open Journal of Statistics, 5, 245-253. doi: 10.4236/ojs.2015.54026.

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