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Psychology

PSY202H1

Ashley Waggoner Denton

Winter

Description

REVIEW NOTES
1. An analysis of variance comparing three treatment conditions produces df total24. For this ANOVA,
what is the value of df between
2
2. In an analysis of variance, which of the following is directly influenced by the size of the sample mean
differences?
SS between
.
3. In general, the largest F-ratio will be obtained when the differences between sample means are ____
and the magnitudes of the sample variances are ____.
large, small
4. An analysis of variance is used to evaluate the mean differences for a research study comparing three
treatments with a separate sample of n = 6 in each treatment. If the data produce an F-ratio of F = 4.10,
then which of the following is the correct statistical decision?
Reject the null hypothesis with α = .05 but not with α = .01.
5. A researcher reports an F-ratio with df = 3, 36 from an independent-measures research study. Based on
the df values, how many treatments were compared in the study and what was the total number of
subjects participating in the study?
4 treatments and 40 subjects
6. In analysis of variance, the magnitude of the sample variances will contribute to ____.
the denominator of the F-ratio
7. An experiment compares three treatment conditions with a separate sample of n = 10 in each treatment.
If the data are analyzed with ANOVA, the analysis would have df total____.
29
8. Which combination of factors is most likely to produce a large value for the F-ratio?
large mean differences and small sample variances
9. The results from a repeated-measures ANOVA are reported as, "F(2, 24) = 3.75, p < .05." For this
study, how many treatment conditions were compared?
3
10. A repeated-measures study uses a sample of n = 5 individuals to evaluate the mean differences among
three treatments. The ANOVA for this study has ____.
dfwithin treatmentsnd df between subjects 11. A researcher obtains an F-ratio with df = 2, 12 from an ANOVA for a repeated-measures research
study. How many subjects participated in the research study?
8
12. For the following data, if between subjectsal to 6, then the SS for the error term would be ____.
Treatments
Subject I II III P-totals
A 0 1 2 3 G = 18
B 1 1 4 6 ∑X = 64
C 2 1 6 9
T = 3 T = 3 T = 12
SS = 2 SS = 0 SS = 8
4
13. In a repeated-measures ANOVA, the SS within treatmentsded into two components. What are they?
between subjects and error
14. A researcher is using a repeated-measures design to test for mean differences among four treatment
conditions. If the data for this study consist of 10 scores in each treatment, then how many subjects
participated in the study?
10
15. For a repeated-measures ANOVA, which of the following is computed differently than in the
independent-measures ANOVA?
the denominator of the F ratio
16. The results from a two-factor analysis of variance show a significant main effect for factor A and a
significant main effect for factor B. Based on this information, you can conclude that ____.
You cannot make any conclusion about the significance of the interaction.
17. For an experiment involving three levels of factor A and four levels of factor B with a sample of n = 5
in each treatment condition, what is the value fowithin
48
18. The results of a two-factor research study are or

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