Learning Check, more ANOVA

1. If a research article presented the results of an analysis of variance as "F(2,38) = 3.60, p < .05," how many groups were there in the study?

a. 2
b. 3
c. 40
d. 41

2. A(n) __________ is when the influence of one independent variable changes according to the level of another independent variable.

3. How many independent variables does a 2 X 2 X 2 factorial design have?

4. Which of the following graphs shows an interaction effect? _______

5. What do you look at to determine this? ________________________

Graph A, B, C

NOTE: I used the graphs from the handout on French & U.S. comedians and actors, and just relabelled the variables. A is the one with two flat lines. B is the one with two lines that come together (converge). C is the one with two lines that cross.

Answers below.

Answers, ANOVA

1. b
2. interaction effect
3. c
4. b & c
5. Whether lines are parallel