ABSTRACT
Discusses ANOVA, ANCOVA, and introduces Hierarchical Linear Modeling. The concepts underpinning the one-way ANOVA table are reviewed, and thereafter two-way ANOVA and repeated measures are discussed. Worked examples are discussed, including of an RCT and examples from the learning-sciences literature. HLM is introduced as a regression-based method suitable for studies on collaborative learning and student learning resulting from large professional development projects.
