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stat.CO2018
Varimax rotation based on gradient projection needs between 10 and more than 500 random start loading matrices for optimal performance
Anneke Cleopatra Weide, André Beauducel
Gradient projection rotation (GPR) is a promising method to rotate factor or component loadings by different criteria. Since the conditions for optimal performance of GPR-Varimax a…
stat.AP2018
On optimal allocation of treatment/condition variance in principal component analysis
André Beauducel, Norbert Hilger
The allocation of a (treatment) condition-effect on the wrong principal component (misallocation of variance) in principal component analysis (PCA) has been addressed in research o…
stat.AP2018
Differences of Type I error rates for ANOVA and Multilevel-Linear-Models using SAS and SPSS for repeated measures designs
Nicolas Haverkamp, André Beauducel
To derive recommendations on how to analyze longitudinal data, we examined Type I error rates of Multilevel Linear Models (MLM) and repeated measures Analysis of Variance (rANOVA)…