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Sub-dimensional Mardia measures of multivariate skewness and kurtosis

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  • Chowdhury, Joydeep
  • Dutta, Subhajit
  • Arellano-Valle, Reinaldo B.
  • Genton, Marc G.

Abstract

The Mardia measures of multivariate skewness and kurtosis summarize the respective characteristics of a multivariate distribution with two numbers. However, these measures do not reflect the sub-dimensional features of the distribution. Consequently, testing procedures based on these measures may fail to detect skewness or kurtosis present in a sub-dimension of the multivariate distribution. We introduce sub-dimensional Mardia measures of multivariate skewness and kurtosis, and investigate the information they convey about all sub-dimensional distributions of some symmetric and skewed families of multivariate distributions. The maxima of the sub-dimensional Mardia measures of multivariate skewness and kurtosis are considered, as these reflect the maximum skewness and kurtosis present in the distribution, and also allow us to identify the sub-dimension bearing the highest skewness and kurtosis. Asymptotic distributions of the vectors of sub-dimensional Mardia measures of multivariate skewness and kurtosis are derived, based on which testing procedures for the presence of skewness and of deviation from Gaussian kurtosis are developed. The performances of these tests are compared with some existing tests in the literature on simulated and real datasets.

Suggested Citation

  • Chowdhury, Joydeep & Dutta, Subhajit & Arellano-Valle, Reinaldo B. & Genton, Marc G., 2022. "Sub-dimensional Mardia measures of multivariate skewness and kurtosis," Journal of Multivariate Analysis, Elsevier, vol. 192(C).
    • Handle: RePEc:eee:jmvana:v:192:y:2022:i:c:s0047259x22000859
    DOI: 10.1016/j.jmva.2022.105089
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    2. Abdulkadir A. Araye & Mohd Suffian Yusoff & Nik Azimatolakma Awang & Teh Sabariah Binti Abd Manan, 2023. "Evaluation of the Methane (CH 4 ) Generation Rate Constant ( k Value) of Municipal Solid Waste (MSW) in Mogadishu City, Somalia," Sustainability, MDPI, vol. 15(19), pages 1-20, October.

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