Effect of kurtosis on efficiency of some multivariate medians

Jin Wang and Weihua Zhou

Journal of Nonparametric Statistics, 2015, vol. 27, issue 3, 331-348

Abstract: Up to now, various multivariate medians have been proposed. To support their applications, we study the effect of kurtosis on efficiency of some well-known multivariate medians. Results are established for the coordinatewise median, the spatial median, the Oja median, and their modified versions. Such results provide a basis for choosing among the multivariate medians in practical analyses. The effect of dimension on efficiency of those multivariate medians is also studied. It is found that the result of Brown [(1983), 'Statistical Uses of the Spatial Median', Journal of the Royal Statistical Society, Series B , 45, 25-30] for the spatial median and spherically symmetric normal distributions can be extended to some other medians and some non-normal distributions but does not hold in general.

Date: 2015
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DOI: 10.1080/10485252.2015.1046450

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