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Improved Bayes estimators and prediction for the Wilson-Hilferty distribution
Pedro L Ramos1, Marco P Almeida1,2, Vera L D Tomazella2
1Departamento de Matemática Aplicada e Estatística, Universidade de São Paulo, Avenida TrabalhadorSão-Carlense, 400, 13566-590 São Carlos, SP, Brazil.
Abstract:
In this paper, we revisit the Wilson-Hilferty distribution and presented its mathematical properties such as the r-th moments and reliability properties. The parameters estimators are discussed using objective reference Bayesian analysis for both complete and censored data where the resulting marginal posterior intervals have accurate frequentist coverage. A simulation study is presented to compare the performance of the proposed estimators with the frequentist approach where it is observed a clear advantage for the Bayesian method. Finally, the proposed methodology is illustrated on three real datasets.
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