Robust Estimation Methods in Random Intercept Model: A Comparative Study [PDF]
The Egyptian Statistical Journal, 2018 Random Intercept regression models are used in modeling grouped data where the observations are correlated in each group. This paper present a comperative sinulation study between parametric and two robust estimation methods to assess the influence of
Eman M. Hanafy +2 more
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Improved estimators for the rate parameter of gamma model using asymptotic properties
Heliyon, 2021 In this paper we proposed three estimators namely linear shrinkage, preliminary test and shrinkage preliminary test for the rate parameter of univariate gamma.
Nana Kena Frempong +3 more
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Matched Pairs with Binary Outcomes
Revstat Statistical Journal, 2020 Comparison of two treatments in matched pairs is a powerful general method for improving precision. When the outcome is binary the formulation in terms of logistic comparisons leads to an analysis in which concordant pairs, that is pairs in which both ...
Christiana Kartsonaki , D.R. Cox
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A Testing for New Renewal Better than Used Class of Survival Functions [PDF]
The Egyptian Statistical Journal, 2000 A U-statistic is derived for testing exponentiality against new renewal better (worse) than used. For this class of life distributions, a nonparametric procedure (U-statistic) is presented in this investigation. Selected critical values are tabulated for
M. Hendi
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On Optimal and Asymptotic Properties of a Fuzzy L2 Estimator
Mathematics, 2020 A fuzzy least squares estimator in the multiple with fuzzy-input–fuzzy-output linear regression model is considered. The paper provides a formula for the L2 estimator of the fuzzy regression model. This paper proposes several operations for fuzzy numbers
Jin Hee Yoon, Przemyslaw Grzegorzewski
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Goodness of Fit Approach for Testing Exponential Better than Used in Convex for Life Distributions [PDF]
The Egyptian Statistical Journal, 2004 Test statistic is derived for testing exponentiality against exponential better (worse) than used in convex EBUC (EWUC). Selected critical values are tabulated for sample size n=5(1)25(5) 50.
M. Hendi, N. AL-Ghufily
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Two symmetric and computationally efficient Gini correlations
Dependence Modeling, 2020 Standard Gini correlation plays an important role in measuring the dependence between random variables with heavy-tailed distributions. It is based on the covariance between one variable and the rank of the other. Hence for each pair of random variables,
Vanderford Courtney +2 more
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The Efficiency of a Nonlinear Discriminant Function based on Unclassified Initial Samples from a Mixture of Two Weibull Population Mean Distribution Populations [PDF]
Assiut University Journal of Multidisciplinary Scientific ResearchThis research investigates the asymptotic behavior of a discrimination procedure based on a mixture of two populations governed by the Weibull Population Mean Distribution (WPMD).
Omar Ahmed +2 more
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Simultaneous estimation of log-normal coefficients of variation: Shrinkage and pretest strategies
MethodsX, 2023 In this paper, we consider the problem of estimating the log-normal coefficients of variation when multiple samples from log-normal populations with unequal variances are combined.
Mahmoud Aldeni +3 more
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Testing Exponentiality Against UBAC Using Kernel Methods [PDF]
Journal of Statistical Theory and Applications (JSTA), 2014 In this paper, the problem of testing exponentiality against used better than aged in convex ordering classes of life distributions is investigated. For this property a nonparametric test is presented based on kernel method.
M.M. Mohie El-Din +2 more
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