Results 1 to 10 of about 7,070,673 (250)
On a Test of Homogeneity of Variances [PDF]
The Egyptian Statistical Journal, 1985 In this paper asymptotic expansions of the non-null distribution of Bartlett's statistic for testing hemogeneity of variances of p normal populations are obtained under local lternatives. The expansions are in terms of chi-square distributions.
B.N. Nagarsenker, P.B. Nagarsenker
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Two-Sample Nonparametric Test of Homogeneity [PDF]
The Egyptian Statistical Journal, 2000 Given independent multivariate random samples x1, x2, ..., xnand y1, y2….yn from distributions F and G, a test is desired for Ho: F = G against general alternatives.
Ali Barakat
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Two-Sample Multivariate Test of Homogeneity [PDF]
مجلة جامعة النجاح للأبحاث العلوم الطبيعية, 2003 Given independent multivariate random samples X1, X2,.... , and Y1, Y2,..... , from distributions F and G, a test is desired for Ho: F = G against general alternatives.
Ali S. Barakat
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Homogeneity test for correlated binary data. [PDF]
PLoS ONE, 2015 In ophthalmologic studies, measurements obtained from both eyes of an individual are often highly correlated. Ignoring the correlation could lead to incorrect inferences. An asymptotic method was proposed by Tang and others (2008) for testing equality of
Changxing Ma, Guogen Shan, Song Liu
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Preparation of Sepiolite Reference Material for Chemical Composition Analysis
Yankuang ceshi, 2021 BACKGROUND Sepiolite is a very important non-metallic mineral, which is widely used in aviation, animal husbandry, the chemical industry, environmental protection and other fields.
WEI Shuang +5 more
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Homogeneity Test of the First-Order Agreement Coefficient in a Stratified Design
Entropy, 2023 Gwet’s first-order agreement coefficient (AC1) is widely used to assess the agreement between raters. This paper proposes several asymptotic statistics for a homogeneity test of stratified AC1 in large sample sizes.
Mingrui Xu +3 more
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Climatological Study of Ozone over Saudi Arabia
Atmosphere, 2021 In this work, analysis of the variability of total column ozone (TCO) over the Kingdom of Saudi Arabia (KSA) has been conducted during the 1979–2020 period based on the ECMWF-ERA5 dataset.
Saleha Al-Kallas +5 more
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pyHomogeneity: A Python Package for Homogeneity Test of Time Series Data
Journal of Open Research Software, 2023 The pyHomogeneity package is a pure python package for performing homogeneity tests. The homogeneity test is applied to detect one (or more) change-point/breakpoint in the time series or sequential data.
Md. Manjurul Hussain +2 more
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Homogeneity Test of Multi-Sample Covariance Matrices in High Dimensions
Mathematics, 2022 In this paper, a new test statistic based on the weighted Frobenius norm of covariance matrices is proposed to test the homogeneity of multi-group population covariance matrices.
Peng Sun, Yincai Tang, Mingxiang Cao
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Testing for homogeneity in mixture models [PDF]
Econometric Theory, 2017 Statistical models of unobserved heterogeneity are typically formalized as mixtures of simple parametric models and interest naturally focuses on testing for homogeneity versus general mixture alternatives. Many tests of this type can be interpreted asC(α) tests, as in Neyman (1959), and shown to be locally asymptotically optimal.
Jiaying Gu +2 more
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