13. ANOVA

ANOVA stands for ANalysis Of VAriance. ANOVAs analyze the variation between and within groups. There are multiple types of ANOVAs based on the nature of the independent variable(s):

Nature of IV(s)	Type of ANOVA
1 between-subjects IV	One-way ANOVA
1 within-subjects IV	Repeated-measures ANOVA
2+ between-subjects IVs	Independent factorial ANOVA
2+ within-subjects IVs	Repeated measures factorial ANOVA
2+ IVs mixed between/within	Mixed factorial ANOVA
1+ IV with a continuous covariate	ANCOVA

Furthermore, there are ANOVAs for when there are multiple dependent variables (called the MANOVA or Multiple ANOVA, as well as the MANCOVA or Multiple ANCOVA) but we will not discuss them in this class.