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Revista Colombiana de Estadística

Print version ISSN 0120-1751

Abstract

DOMMA, Filippo et al. The Odd Log-Logistic Dagum Distribution: Properties and Applications. Rev.Colomb.Estad. [online]. 2018, vol.41, n.1, pp.109-135. ISSN 0120-1751.  http://dx.doi.org/10.15446/rce.v41n1.66542.

This paper introduces a new four-parameter lifetime model called the odd log-logistic Dagum distribution. The new model has the advantage of being capable of modeling various shapes of aging and failure criteria. We derive some structural properties of the model odd log-logistic Dagum such as order statistics and incomplete moments. The maximum likelihood method is used to estimate the model parameters. Simulation results to assess the performance of the maximum likelihood estimation are discussed. We prove empirically the importance and flexibility of the new model in modeling real data.

Keywords : Dagum Distribution; Maximum Likelihood; Odd Log-Logistic Family; Order Statistics.

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