
Ch. 12-13 ANOVA review
Authored by Michael Maniaci
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A one-way ANOVA produces SStotal = 80 and SSwithin-treatments = 30. For this analysis, what is SSbetween-treatments?
50
110
2400
More information is needed
2.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A one-way ANOVA yields SSbetween=9 and SSwithin=40, with dfbetween=3 and dfwithin=20. What is the F-ratio?
0.23
0.67
1.50
Some other value
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A researcher compares four conditions with one-way ANOVA. Which of the following could be the alternate hypothesis (H_a)?
There are no differences among any of the population means.
One sample mean differs from at least one other sample mean.
All of the population means differ from one another.
There is at least one difference among the population means.
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If a two-factor analysis of variance produces a statistically significant interaction, then you can conclude...
that one of the main effects is also significant.
that neither of the main effects is significant.
that both main effects are also significant.
The significance of the main effects is not related to the interaction.
5.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
What does it mean if two variables interact in a two-factor ANOVA?
The effect of one factor depends on the level of the other factor.
The effect of one factor is independent of the effect of the other factor.
Both factors have a significant main effect.
One factor predicts the scores on the other factor.
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