2-Way ANOVA

Question 1

In Alicia’s study, what effects were statistically significant?

Answer 1

A. Aptitude
B. Treatment
C. The Aptitude by Treatment interaction
D. They are all significant**

Question 2

What explained the largest amount of variance?

Answer 2

A. Aptitude***
B. Treatment
C. Aptitude by Treatment interaction
D. The unexplained variance

Question 3

What had the largest effect?

Answer 3

A. Aptitude**
B. Treatment
C. Aptitude by Treatment interaction
D. The unexplained variance

Question 4

The best interpretation is that_____.

Answer 4

A. the students with the highest aptitude do the best given a post hoc significant t-test with middle and low aptitude groups
B. the low aptitude group appears to benefit from the first treatment most of all
C. the main effects and the aptitude treatment interaction are equivalent
D. both A and B***