journal-of-statistics-and-management-systems

Journal of Statistics and Management Systems

2169-0014 0972-0510

Taru Publications

10.47974/JSMS-1433

The new flexible Weibull-G family : Properties, simulations, and applications to COVID-19 data

Ferreira

Alexsandro A.

Department of Statistics, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil Cordeiro

Gauss M.

Department of Statistics, Universidade Federal de Pernambuco, Recife, Pernambuco, Brazil

29 7 & 8 July & August 701 714

11 05 2026

The flexible Weibull-G derives its properties from the exponentiated-G class. Its scope is expanded through a regression structure, with parameters estimated using maximum likelihood. Simulations confirm its consistency, and COVID-19 applications demonstrate superior performance compared to baseline models.

COVID-19 Flexible Weibull Monte Carlo simulation Newton-raphson

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