Statistics, Optimization and Information Computing, Volume (8), No (1), Year (2020-2) , Pages (66-79)
Title : ( A Density-Based Empirical Likelihood Ratio Approach for Goodness-of-fit Tests in Decreasing Densities )
Authors: Vahid Fakoor , Masoud Ajami , S. M. A. Jahanshahi , Ali Shariati ,File:
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Abstract
In this paper, we propose a test for the null hypothesis that a decreasing density function belongs to a given parametric family of distribution functions against the non-parametric alternative. This method, which is based on an empirical likelihood (EL) ratio statistic, is similar to the test introduced by Vexler and Gurevich [23]. The consistency of the test statistic proposed is derived under the null and alternative hypotheses. A simulation study is conducted to inspect the power of the proposed test under various decreasing alternatives. In each scenario, the critical region of the test is obtained using a Monte Carlo technique. The applicability of the proposed test in practice is demonstrated through a few real data examples.