Homework SourseA twoway ANOVA with interaction has how many sources of vari
A two-way ANOVA with interaction has how many sources of variation?
a. 4
b. 2
c. 3
d. 5
Solution
A two-way ANOVA with interaction has how many sources of variation?
Ans is 5
| Source | SS | df | MS | F |
| Main Effect A | given | A, a-1 | SS / df | MS(A) / MS(W) |
| Main Effect B | given | B, b-1 | SS / df | MS(B) / MS(W) |
| Interaction Effect | given | A*B, (a-1)(b-1) | SS / df | MS(A*B) / MS(W) |
| Within | given | N - ab, ab(n-1) | SS / df | |
| Total | sum of others | N - 1, abn - 1 |
