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A New Class of Alternative Bivariate Kumaraswamy-Type Models: Properties and Applications

Indranil Ghosh ()
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Indranil Ghosh: Department of Mathematics and Statistics, University of North Carolina, Wilmington, NC 28403, USA

Stats, 2023, vol. 6, issue 1, 1-21

Abstract: In this article, we introduce two new bivariate Kumaraswamy (KW)-type distributions with univariate Kumaraswamy marginals (under certain parametric restrictions) that are less restrictive in nature compared with several other existing bivariate beta and beta-type distributions. Mathematical expressions for the joint and marginal density functions are presented, and properties such as the marginal and conditional distributions, product moments and conditional moments are obtained. Additionally, we show that both the proposed bivariate probability models have positive likelihood ratios dependent on a potential model for fitting positively dependent data in the bivariate domain. The method of maximum likelihood and the method of moments are used to derive the associated estimation procedure. An acceptance and rejection sampling plan to draw random samples from one of the proposed models along with a simulation study are also provided. For illustrative purposes, two real data sets are reanalyzed from different domains to exhibit the applicability of the proposed models in comparison with several other bivariate probability distributions, which are defined on [ 0 , 1 ] × [ 0 , 1 ] .

Keywords: bivariate Kumaraswamy-type distribution; positive likelihood ratio dependence; maximum likelihood estimation; earthquake data (search for similar items in EconPapers)
JEL-codes: C1 C10 C11 C14 C15 C16 (search for similar items in EconPapers)
Date: 2023
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