Analysis of Variance and Covariance

 The Craft of Statistical Analysis

• Fixed and Random Factors in Mixed Models: What IS the difference?
• The 13 Steps to Running Any Statistical Model
• Effect Size Statistics

 Statistically Speaking Trainings

• Interactions in ANOVA and Regression Models
• MANOVA
• Multiple Comparisons
• Marginal Means, Your New Best Friend
• Crossed and Nested Factors
• An Overview of Effect Size Statistics and Why They are So Important
• ANCOVA (Analysis of Covariance)

 Articles at The Analysis Factor

• Specifying Variables as Within-Subjects Factors in Repeated Measures
• Interpreting Interactions when Main Effects are Not Significant
• Actually, you can interpret some main effects in the presence of an interaction
• When Does Repeated Measures ANOVA not work for Repeated Measures Data?
• Non-parametric ANOVA in SPSS
• When Assumptions of ANCOVA are Irrelevant
• ANCOVA Assumptions: When Slopes are Unequal
• The Difference Between Crossed and Nested Factors
• Checking the Normality Assumption for an ANOVA Model
• A Comparison of Effect Size Statistics