BAREKENG: Jurnal Ilmu Matematika dan Terapan
Vol 20 No 4 (2026): BAREKENG: Journal of Mathematics and Its Application

A NEW ONE-PARAMETER DISTRIBUTION FOR MODELING POSITIVE SKEWNESS DATA: THE GENERIC KRISON DISTRIBUTION

Elbert Krison (Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Indonesia)
Siti Nurrohmah (Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Indonesia)
Sindy Devila (Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Indonesia)
Ida Fithriani (Department of Mathematics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Indonesia)



Article Info

Publish Date
24 Aug 2026

Abstract

Inspired by the hyperbolic secant distribution and a specific hyperbolic trigonometric identity, we propose a new continuous distribution with one parameter, called the Generic Krison distribution. We derive its probability density function, survival function, cumulative distribution function, hazard function, quantile function, and mean excess loss function. Closed‑form expressions for the moment generating function are also provided. Statistical measures including the raw moments, mean, variance, standard deviation, median, mode, skewness, kurtosis, coefficient of variation, and index of dispersion are obtained. The distribution exhibits constant moderate positive skewness and a constant coefficient of variation, making it a natural candidate for modeling positively skewed data. The parameter is estimated by the method of maximum likelihood; because the score equation is transcendental, the estimate is obtained numerically. We compare the Generic Krison distribution with the one‑parameter Rayleigh, Lindley, and Bilal distributions across three datasets (income, survival time, mortality rate). The results demonstrate that the Generic Krison distribution performs well on all three datasets, offering a promising new tool for statistical modeling.

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Journal Info

Abbrev

barekeng

Publisher

Subject

Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Energy Engineering Mathematics Mechanical Engineering Physics Transportation

Description

BAREKENG: Jurnal ilmu Matematika dan Terapan is one of the scientific publication media, which publish the article related to the result of research or study in the field of Pure Mathematics and Applied Mathematics. Focus and scope of BAREKENG: Jurnal ilmu Matematika dan Terapan, as follows: - Pure ...