What does a mixed-design ANOVA involve?

What does a mixed-design ANOVA involve?

• A. A design with two factors, at least one within-subjects and one between-subjects
• B. A design with a single factor and multiple levels
• C. An analysis with only one dependent variable
• D. A nonparametric alternative to ANOVA

Answer: (A)

A mixed-design ANOVA combines within-subjects (repeated measures) and between-subjects factors in one analysis. It involves at least two factors, with one manipulated across time or conditions in the same participants and another comparing different groups of participants. This setup lets you test the main effect of each factor and the interaction between them. For example, you might look at how a dependent variable changes from pre to post (within-subjects) while comparing two different teaching methods (between-subjects). The analysis partitions variance into between-subjects, within-subjects, and error components, enabling conclusions about whether changes over time differ by group. If both factors were between-subjects or if there were only a single factor or a nonparametric approach, you’d be looking at a different design or method, not a mixed design.

A mixed-design ANOVA combines within-subjects (repeated measures) and between-subjects factors in one analysis. It involves at least two factors, with one manipulated across time or conditions in the same participants and another comparing different groups of participants. This setup lets you test the main effect of each factor and the interaction between them. For example, you might look at how a dependent variable changes from pre to post (within-subjects) while comparing two different teaching methods (between-subjects). The analysis partitions variance into between-subjects, within-subjects, and error components, enabling conclusions about whether changes over time differ by group. If both factors were between-subjects or if there were only a single factor or a nonparametric approach, you’d be looking at a different design or method, not a mixed design.