Results 31 to 40 of about 14,760,741 (339)

Homogeneity of the Test Variants in Entrance Exams

open access: yesMATEC Web of Conferences, 2017
The problem of homogeneity of test variants in mathematics, which are used in admission process, is solved in present paper. The analysed data are the results of entrance examination in mathematics at University of Economics in Prague.
Klůfa Jindřich
doaj   +1 more source

Unbiasedness of Tests for Homogeneity

open access: yesThe Annals of Statistics, 1987
The authors consider the problem of testing homogeneity of k-samples drawn from a one-parameter exponential family with pdf \(f(x,\theta)=\beta (\theta)e^{\theta x} h(x)\) where h(x) is assumed log concave or is a Polya frequency function of order two. W.l.g.
Cohen, Arthur, Sackrowitz, Harold B.
openaire   +3 more sources

Accuracy of nonparametric density estimation for univariate Gaussian mixture models: A comparative study

open access: yesMathematical Modelling and Analysis, 2020
Flexible and reliable probability density estimation is fundamental in unsupervised learning and classification. Finite Gaussian mixture models are commonly used for this purpose. However, the parametric form of the distribution is not always known.
Jurgita Arnastauskaitė, Tomas Ruzgas
doaj   +1 more source

How to use χ2 test correctly——the homogeneity test for the data of a multiway table and the implementation of SAS software

open access: yesSichuan jingshen weisheng, 2021
The purpose of the paper was to introduce the methods for the homogeneity test of odds ratio of a special multiway table (i.e g×2×2 table) and its SAS implementation.
Hu Chunyan, Hu Liangping
doaj   +1 more source

A Parametric Bootstrap Version of Hedges’ Homogeneity Test [PDF]

open access: yes, 2003
Hedges’ Q-test is frequently used in meta-analyses to evaluate the homogeneity of effect sizes, but for several kinds of effect size measures it does not always appropriately control the Type 1 error probability.
Onghena, Patrick, Van den Noortgate, Wim
core   +2 more sources

A Posterior p-Value for Homogeneity Testing of the Three-Sample Problem

open access: yesMathematics, 2023
In this paper, we study a special kind of finite mixture model. The sample drawn from the model consists of three parts. The first two parts are drawn from specified density functions, f1 and f2, while the third one is drawn from the mixture.
Yufan Wang, Xingzhong Xu
doaj   +1 more source

Generalized score test of homogeneity for mixed effects models

open access: yes, 2006
Many important problems in psychology and biomedical studies require testing for overdispersion, correlation and heterogeneity in mixed effects and latent variable models, and score tests are particularly useful for this purpose. But the existing testing
Zhang, Heping, Zhu, Hongtu
core   +2 more sources

Regional spatial and temporal variability of rainfall, temperature over Bangladesh and Northern Bay of Bengal

open access: yesEnvironmental Challenges, 2021
The spatial and temporal variation of rainfall, Tmax and Tmin (mean maximum and minimum temperature) and ΔT (Tmax -Tmin) of different Regions of Bangladesh and Sea Surface Temperature (SST) of Northern Bay of Bengal at seasonal and annual timescales for ...
Mohammad Shohrab Hossain Sarker
doaj   +1 more source

Chi-Squared Test for Hypothesis Testing of Homogeneity

open access: yesJournal of Mathematical Sciences, 2023
18 ...
openaire   +2 more sources

Preparation of Reference Materials GBW10010a for Rice Component and Data Characteristics

open access: yesYankuang ceshi, 2020
BACKGROUND With the increased attention paid for the construction of ecological civilization, a comprehensive survey of natural resources is imperative, and new requirements for biological reference materials have also been put forward.
YANG Rong   +4 more
doaj   +1 more source

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