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Statistical Analysis2
Statistical Distributions2
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Generalization1
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Esra Oyar1
Jimin Oh1
Katherine J. Strickland1
Serpil Çelikten-Demirel1
Tuba Gündüz1
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The Energy Distance between Covariate Distributions and Assessments of Generalization
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Wendy Chan; Jimin Oh; Katherine J. Strickland – Society for Research on Educational Effectiveness, 2025
Background: The generalizability of a study refers to the extent to which the results and inferences from a sample apply to individuals in a larger target population of inference (Shadish et al., 2002). In practice, the strongest tool to facilitate generalizations is random or probability sampling, which is rare in educational studies (Olsen et…
Descriptors: Generalization, Sampling, Statistical Distributions, Statistical Analysis
Investigating Homogeneity of Variance in Normal, Skewed-Normal, and Gamma Distributions: A Simulation Study
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Serpil Çelikten-Demirel; Aysenur Erdemir; Esra Oyar; Tuba Gündüz – International Journal of Assessment Tools in Education, 2025
It is an important point to test the homogeneity of variances in statistical methods such as the t-test or F-test used to make comparisons between groups. An erroneous decision regarding the homogeneity of variances will affect the test to be selected and thus lead to different results. For this reason, there are many tests for homogeneity of…
Descriptors: Statistical Analysis, Statistical Distributions, Sample Size, Error of Measurement