In a graph showing the means from a two-factor experiment, parallel lines indicate that there is no interaction.
Chapter 15 Quiz Review

Quiz
•
Mathematics
•
University
•
Hard
Tasi Levao
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
True
False
Answer explanation
True. Recall that an interaction exists when lines cross or converge between the two factors.
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of the following is NOT one of the three hypothesis tests?
Main Effect for Factor A
Main Effect for Factor B
Main Effect for AxB
All of the Above
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
It is impossible to have an interaction unless you also have main effects for at least one of the two factors.
True
False
Answer explanation
False. The existence of main effects and interactions is completely independent.
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Using the graph, which of the following must be true?
There is a Main Effect for Factor A only
There is an Interaction between Factor A and Factor B
There is a Main Effect between Factor A and Factor B
There are two Interactions and 2 Main Effects
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which statement is true regarding main effects?
There is a Main Effect for Factor A only
There is a Main Effect for Factor B only
There is a Main Effect for both Factor A and Factor B
There is no Main Effect for either factors
Answer explanation
After taking the Mean from row 1, we get A1 = (10 + 20)/2 = 15. Now we must compare this mean to row 2's mean: (30 + 40)/2 = 35. Since there is a 20-point difference, we can see that there is a Main Effect for Factor A. Repeat again doing the columns for factor B: B1 = (10 + 30)/2 = 20. B2 = (20 + 40)/2 = 30. Since there is a 10-point difference between the two means, there's also a Main Effect for Factor B.
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
How many f-ratios do we solve for in a 2-factor ANOVA?
2
1
3
4
Answer explanation
We solve for FA, FB, and FAxB. These are all three values.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
The effect size for a two-factor ANOVA is measured by what symbol?
η2 (eta squared)
Θ (eta squared)
Σ (eta squared)
Δ (eta squared)
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