2012•Journal of Modern Applied Statistical MethodsOpen access

Modified EDF Goodness of Fit Tests for Logistic Distribution under SRS and RSS

S. A. Al-Subh, M. T. Alodat, Kamaruzaman Ibrahim, Abdul Aziz Jemain

Abstract

Modified forms of goodness of fit tests are presented for the logistic distribution using statistics based on the empirical distribution function (EDF). A method to improve the power of the modified EDF goodness of fit tests is introduced based on Ranked Set sampling (RSS). Data are collected via the Ranked Set Sampling (RSS) technique (McIntyre, 1952). Critical values for the logistic distribution with unknown parameters are provided and the powers of the tests are given for a number of alternative distributions. A simulation study is presented to illustrate the power of the new method.

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Key concepts: Goodness of fit, RSS, Statistics, Logistic distribution, Mathematics, Empirical distribution function, Logistic regression, Econometrics