Session 3. Two-way ANOVA. One-way ANOVA. Imagine that we have administered a placement test to a large groups of Ss from five different schools. We want to know if the performance differs across the five schools. The design box for this study would look like: IV=schools; DV=test scores
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Two-Way ANOVA post hoc analysis
This experiment involves presenting a group of students with a lecture on an syntax. One week later, the students are given a test on the lecture material. To manipulate the conditions at the time of learning, some students receive the lecture in a large classroom, and some hear the lecture in a small classroom. For those students who were lectured in the large room, one half are tested in the same large room, and the others are changed to the small room for testing. Similarly, one-half of the students who were lectured in the small room are tested in the small room, and the other half are tested in the large room. Thus the experiment involves four groups of subjects in a two-factor design. The score for each subject is the number of correct answers on the test.