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θ-Weighted mixture distribution: the Weibull-Lomax case.

Authors :
Carvajal-Muquillaza, Cristian
Manríquez, Ronald
Cabrera, Eduardo
Afify, Ahmed Z.
Iriarte, Yuri A.
Source :
Frontiers in Applied Mathematics & Statistics; 2024, p1-21, 21p
Publication Year :
2024

Abstract

Introduction: This article introduces a new family of weighted mixture distributions, referred to as θ-WM. The θ-WM family is generated by combining two distributions weighted by a parameter θ, offering notable flexibility to model a wide range of complex phenomena. A special case study of the θ-weighted mixture distribution of Weibull-Lomax (θ-WMWLx) is included, resulting from the combination of Weibull and Lomax distributions. Methods: The research thoroughly examines the reliability and statistical properties of the θ-WMWLx distribution. Key aspects such as stochastic dominance, survival and hazard functions, mean residual life, and moments are addressed. The maximum likelihood method is used to estimate unknown parameters. Results: The research findings show that the θ-WMWLx distribution provides a superior fit compared to competing distributions. The analyses are validated using three real datasets, demonstrating the effectiveness of the proposed distribution. Discussion: The θ-WMWLx distribution stands out for its ability to model complex phenomena with high precision. Validation with real data confirms that the proposed distribution offers a better fit than existing distributions, highlighting its utility and applicability in various statistical analysis contexts. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
22974687
Database :
Complementary Index
Journal :
Frontiers in Applied Mathematics & Statistics
Publication Type :
Academic Journal
Accession number :
179162437
Full Text :
https://doi.org/10.3389/fams.2024.1418589