Results 21 to 30 of about 195 (132)
Monte Carlo Comparison of Variance Components Estimators [PDF]
The Egyptian Statistical Journal, 1994 For the one-way classification random model with unbalanced data, I compare five estimators of σ 2/a and σ 2/e the among and within-treatments variance components: Analysis of Variance (ANOVA), Minimum Norm Quadratic Unbiased Estimators (MINQUE) and the ...
A. Shaban
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Assessing the utility of a novel entrustment‐supervision assessment tool
Medical Education, Volume 57, Issue 10, Page 949-957, October 2023., 2023 Abstract Background Work‐based assessments (WBAs) are increasingly used to inform decisions about trainee progression. Unfortunately, WBAs often fail to discriminate between trainees of differing abilities and have poor reliability. Entrustment‐supervision scales may improve WBA performance, but there is a paucity of literature directly comparing them ...
Sebastian Dewhirst +3 more
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Estimation Procedures in Linear Mixed Effects Models for Repeated Measures Data [PDF]
The Egyptian Statistical Journal, 1993 The purpose of this paper is to derive estimation procedures; namely Maximum Likelihood (ML), Residual Maximum Likelihood (RML) and Minimum Norm Quadratic Unbiased estimates (MINQUE), for estimating the parameters and variance components in linear models
H.f. El-laithy
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Nonlinear total least-squares variance component estimation for GM(1,1) model
Geodesy and Geodynamics, 2021 The solution of the grey model (GM(1,1) model) generally involves equal-precision observations, and the (co)variance matrix is established from the prior information.
Leyang Wang, Jianqiang Sun, Qiwen Wu
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MSE in Estimating Variance Components [PDF]
The Egyptian Statistical Journal, 1992 Best unbiased estimators for the variance of the MINQUE (Minimum Norm Quadratic Unbiased Estimators) and the MSE (Mean Square Error) of the PSD-MINQMBE (Positive Semi Definite- Minimum Norm Quadratic Unbiased Estimators), in estimating the variance ...
A. Shaban
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Exact Optimality of Balanced Designs for Minimum Norm Quadratic Unbiased Estimation of Variance Components in one-way Classified data [PDF]
The Egyptian Statistical Journal, 2004 This paper develops an exact theory for the optimality of balanced designs under minimum norm quadratic unbiased estimation of variances components in one-way classified data.
Mohamed Mohamed El-Abd
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Comparison Between the Minque and the PSD-Minqmbe in the Unbalanced One Way Random Effects Model [PDF]
The Egyptian Statistical Journal, 1994 The PSD-MINOMBE (Positive Semi Definite - Minimum Norm Quadratic Minimum Biased Estimator) for estimating the variance components in the unbalanced one way random effects model is given by Shaban (1990).
Abdel Magid Shaban
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Journal of Computer Adaptive Testing in Africa, 2022 This study applied Generalizability Theory to estimate variance components in Senior Secondary School Certificate Examination (SSSCE) Physics essay questions using a two-facet fully crossed G-study and D-study design.
Blessing Iheanyichukwu Nwuchegbu
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On Interclass and Intraclass Correlations of Familial Data with Application on Hemoglobin Level from EDHS 2000 Familial Data [PDF]
The Egyptian Statistical Journal, 2007 In the analysis of familial data, the primary aim is to estimate the degree of resemblance between family members. Here we are interested in the special case where one group of family members consists of one individual, as typified in the following ...
Zakaria Abd El-Wahed
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The nonnegative MINQUE estimate
Journal of Multivariate Analysis, 1985 The purpose of this paper is to give a characterization of the nonnegative MINQUE estimate for variance components. A similar characterization has been given by \textit{F. Pukelsheim} [Math. Operationsforsch. Stat., Ser. Stat. 12, 271-286 (1981; Zbl 0488.62051)] but only in some special cases.
Massam, Helene, Muller, Jochen
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