Chapter 12

What do each of these terms mean: ANOVA, factor, level, condition, between-groups, within-groups

When do you use a one-way ANOVA? What are the two kinds of one-way ANOVAs? Can you provide an example of each?

What is the null hypothesis in a one-way ANOVA? What is the alternative/research hypothesis?

What is the general logic of a oneway ANOVA? Be able to understand comparing the variance within groups to the variance between groups.

What is the experiment-wise error rate? How does it compare to a Type I error?

Why don’t we just do multiple t-tests?

What does it mean when you get a significant F?

When do we use post-hoc tests? Why do we use post-hoc tests? Which post hoc test will we use in PSY 210?

Can you read an SPSS output table to tell whether F is significant?Can you interpret the results of the experiment, including the main effect (the significance of F) and the post-hoc analyses?

What is “effect size”? What does this term tell us?  What are the guidelines for small, medium, and large effect size?

How do we maximize the power in an experiment?

Be able to perform and interpret any SPSS procedures that we do for this chapter.