Abstract: |
One important area of statistical theory and its applications to bivariate data modeling
is the construction of families of bivariate distributions with specified marginals. This motivates
the proposal of a bivariate distribution employing the Farlie-Gumbel-Morgenstern (FGM) copula
and Epanechnikov exponential (EP-EX) marginal distribution, denoted by EP-EX-FGM. The EP-EX
distribution is a complementing distribution, not a rival, to the exponential (EX) distribution. Its simple
function shape and dependence on a single scale parameter make it an ideal choice for marginals
in the suggested new bivariate distribution. The statistical properties of the EP-EX-FGM model
are examined, including product moments, coefficient of correlation between the internal variables,
moment generating function, conditional distribution, concomitants of order statistics (OSs), mean
residual life function, and vitality function. In addition, we calculated reliability and information
measures including the hazard function, reversed hazard function, positive quadrant dependence
feature, bivariate extropy, bivariate weighted extropy, and bivariate cumulative residual extropy.
Estimating model parameters is accomplished by utilizing maximum likelihood, asymptotic confidence
intervals, and Bayesian approaches. Finally, the advantage of EP-EX-FGM over the bivariate Weibull
FGM distribution, bivariate EX-FGM distribution, and bivariate generalized EX-FGM distribution is
illustrated using actual data sets.
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