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Managing the Assumption of Normality within the General Linear Model with Small Samples: Guidelines for Researchers Regarding If, When and How. [PDF]

open access: yesTutorials in Quantitative Methods for Psychology, 2023
Academic textbooks, statistical literature, and publication guidelines provide conflicting, ambiguous and often incomplete answers to the question of how researchers should handle the normality assumption for classical general linear model tests when ...
Zygmont, Conrad Stanisław
doaj   +1 more source

Ensemble Based Box-Cox Transformation via Meta Analysis

open access: yesJournal of Advanced Research in Natural and Applied Sciences, 2022
Normal distribution has a vital role for the most of statistical methods. Box-Cox power transformation is the most usually applied method when the distribution of data is not normal.
Osman Dağ, Muhammed Ali Yılmaz
doaj   +1 more source

Experimental and Statistical Study of the Effect of Steel Fibers and Design Strength on the Variability in Repeated Impact Test Results

open access: yesFibers, 2022
The ACI 544-2R repeated impact test is known as a low-cost and simple qualitative test to evaluate the impact strength of concrete. However, the test’s main deficiency is the high variability in its results. The effect of steel fibers and the compressive
Ahmmad A. Abbass   +3 more
doaj   +1 more source

Application of a Hermite-based measure of non-Gaussianity to normality tests and independent component analysis

open access: yesFrontiers in Neuroinformatics, 2023
In the analysis of neural data, measures of non-Gaussianity are generally applied in two ways: as tests of normality for validating model assumptions and as Independent Component Analysis (ICA) contrast functions for separating non-Gaussian signals ...
Parul Jain   +4 more
doaj   +1 more source

Normality assessment, few paradigms and use cases

open access: yesRomanian Journal of Laboratory Medicine, 2022
Background: The importance of applying the normality tests is underlined by the way of continuing the statistical protocol for numerical data within inferential statistics, respectively by the parametric or non-parametric tests that we will apply further
Avram Călin, Mărușteri Marius
doaj   +1 more source

Quality Control and Homogeneity Analysis of Precipitation Time Series in the Climatic Region of Iraq

open access: yesAtmosphere, 2023
Non-climatic reasons, such as station replacement and changing the measurement device and calculation method, may make climate data unrepresentative of the actual variation of the regional climate.
Ruqayah Mohammed, Miklas Scholz
doaj   +1 more source

Testing for normality with neural networks [PDF]

open access: yesNeural Computing and Applications, 2021
In this paper, we treat the problem of testing for normality as a binary classification problem and construct a feedforward neural network that can successfully detect normal distributions by inspecting small samples from them. The numerical experiments conducted on small samples with no more than 100 elements indicated that the neural network which we
openaire   +2 more sources

New fat-tail normality test based on conditional second moments with applications to finance [PDF]

open access: yes, 2020
In this paper we introduce an efficient fat-tail measurement framework that is based on the conditional second moments. We construct a goodness-of-fit statistic that has a direct interpretation and can be used to assess the impact of fat-tails on central
Jelito, Damian, Pitera, Marcin
core   +2 more sources

Parametric or Non-parametric: Skewness to Test Normality for Mean Comparison

open access: yesInternational Journal of Assessment Tools in Education, 2020
Checking the normality assumption is necessary to decide whether a parametric or non-parametric test needs to be used. Different ways are suggested in literature to use for checking normality. Skewness and kurtosis values are one of them.
Fatih Orcan
doaj   +1 more source

Quantile-Zone Based Approach to Normality Testing

open access: yesMathematics, 2022
Normality testing remains an important issue for researchers, despite many solutions that have been published and in use for a long time. There is a need for testing normality in many areas of research and application, among them in Quality control, or ...
Atif Avdović, Vesna Jevremović
doaj   +1 more source

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