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328917

Exponentiated Generalized Weibull Exponential Distribution: Properties, Estimation and Applications

Article

Last updated: 29 Dec 2024

Subjects

-

Tags

Mathematical Statistics

Abstract

Real-life sciences rely heavily on statistical modeling because new applications and phenomena pop up constantly, increasing the demand for new distributions.

In this article, the exponentiated generalized Weibull exponential (EGWE) distribution is proposed and studied. The density can exhibit decreasing, increasing, right-skewed, and left-skewed shapes. The hazard rate function shows decreasing, J-shaped, bathtub, and upside-down bathtub shapes. Statistical properties such as asymptotic behavior, quantile function, moment and incomplete moments, mean and median deviations, inequality measures, moment generating function, and order statistics are studied. The estimation of the parameters of the EGWE distribution using six frequentist estimation methods, namely maximum likelihood, least squares, maximum product spacing, weighted least squares, Anderson-Darling, and Cramer-von Mises are discussed. Monte Carlo simulation study to ascertain the behavior of the estimators in terms of average absolute biases and mean square error is carried out. All the estimators performed very well since the average absolute biases and mean square errors decrease as the sample size increases. The usefulness of the EGWE distribution is illustrated with two datasets. The results show that the EGWE distribution provides better parametric fit compared with the competing distributions. Also, in estimating the EGWE parameters with the six estimation methods, the results show that the performance of the six estimation methods is good.

DOI

10.21608/cjmss.2023.243845.1023

Keywords

Weibull distribution, Estimation methods, bathtub, exponentiated generalized, simulations

Authors

First Name

Anuwoje

Last Name

Abonongo

MiddleName

Ida L.

Affiliation

Department of Statistics and Actuarial Science, School of Mathematical Sciences, C. K. Tedam University of Technology and Applied Sciences, Navrongo, Ghana

Email

idalogubayom@yahoo.com

City

-

Orcid

0009-0001-6783-8073

First Name

John

Last Name

Abonongo

MiddleName

-

Affiliation

Department of Statistics and Actuarial Science, School of Mathematical Sciences, C. K. Tedam University of Technology and Applied Sciences, Navrongo, Ghana

Email

jabonongo@cktutas.edu.gh

City

-

Orcid

0000-0003-2149-7709

Volume

3

Article Issue

1

Related Issue

44604

Issue Date

2024-04-01

Receive Date

2023-10-21

Publish Date

2024-04-01

Page Start

57

Page End

84

Print ISSN

2974-3435

Online ISSN

2974-3443

Link

https://cjmss.journals.ekb.eg/article_328917.html

Detail API

https://cjmss.journals.ekb.eg/service?article_code=328917

Order

328,917

Type

Original Article

Type Code

2,545

Publication Type

Journal

Publication Title

Computational Journal of Mathematical and Statistical Sciences

Publication Link

https://cjmss.journals.ekb.eg/

MainTitle

Exponentiated Generalized Weibull Exponential Distribution: Properties, Estimation and Applications

Details

Type

Article

Created At

29 Dec 2024