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If the normality assumption of the single-factor ANOVA is violated, then the Kruskal-Wallis test is a good alternative as long as the sample sizes are large and the distributions are similar.
Mental Abilities
The capacity to perform cognitive tasks and processes that involve thinking, perceiving, and understanding.
Mathematical Abilities
The capacity to perform and understand various mathematical concepts and operations, including calculation, geometry, algebra, and statistics.
Academic Performance
Academic performance refers to how students deal with their studies and how they cope with or accomplish different tasks given to them by their educators.
Studying Hard
The diligent effort and concentration applied towards learning or understanding academic material.
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Q42: In an ANOVA analysis, the R<sup>2</sup> measures