12.3 Factorial ANOVA

12.3.1 Conducting Factorial ANOVA in R Commander

Watch the following video and follow along in your own R Commander window. If you would like to see a transcript of this video, you can do so here.

Note: This video uses the ANOVA_data dataset, which can be downloaded here. If you need to review how to load the dataset into R Commander, review the video on R Commander basics. The section on how to import data begins at 7:30.

12.3.2 Conducting Factorial ANOVA in SPSS

Watch the following video and follow along in your own SPSS window. If you would like to see a transcript of this video, you can do so here.

Note: This video uses the ANOVA_data dataset, which can be downloaded here. If you need to review how to load the dataset into SPSS, review the video on SPSS basics. The section on how to import data begins at 0:48.

12.3.3 Interpreting Factorial ANOVA Output

Watch the following video. If you would like to see a transcript of this video, you can do so here.

12.3.4 Reporting Factorial ANOVA Results in APA Style

1. Identify the grouping and outcome variables in your ANOVA.

2. State whether the first main effect was significant or non-significant.

3. Provide the degrees of freedom, F statistic, p value, and η_p² value for the first main effect. η_p² is only produced in SPSS.

4. State whether the second main effect was significant or non-significant.

5. Provide the degrees of freedom, F statistic, p value, and η_p² value for the second main effect. η_p² is only produced in SPSS.

6. State whether the interaction term was significant or non-significant.

7. Provide the degrees of freedom, F statistic, p value, and η_p² value for the interaction. η_p² is only produced in SPSS.