factorial ANOVA

Factorial ANOVA is a statistical method used to study how two or more factors (independent variables) simultaneously influence a dependent variable. It examines not only the individual effects of each factor but also whether their combined effect differs from what you'd expect by simply adding their individual effects—called interaction. For example, it can analyze how different teaching methods and student backgrounds together impact test scores. This approach allows researchers to see both the main effects and interactions, providing a comprehensive understanding of how various factors work together to influence outcomes.