1. Unlike η2, the formula for ω2 corrects for the number of groups and the size of error in its estimate of effect size.
Answer
Correct Answer:
True
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2. All post hoc tests control for Type II error.
Answer
Correct Answer:
False
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3. For a one-way between-subjects ANOVA, a study with 2 and 36 degrees of freedom, the degrees of freedom for the denominator is 38.
Answer
Correct Answer:
False
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4. There are two sources of variation in a one-way between-subjects ANOVA: one attributed to differences between groups and one attributed to factor.
Answer
Correct Answer:
False
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5. A one-way between-subjects ANOVA is conducted to test for mean differences between the levels of one factor.
Answer
Correct Answer:
True
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6. A researcher reported the following results for a one-way between-subjects ANOVA: F(2, 27) = 3.42, p < .05, n2 = .12. How many participants were observed in this study?
Answer
Correct Answer:
30
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7. Two research studies on the effectiveness of a training program revealed the following results: the sum of squares between groups was larger in Study 1 than in Study 2; the sum of squares total is smaller in Study 1 than in Study 2. Using η2, in which study will the effect size be larger?
Answer
Correct Answer:
Study 1
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8. Two research studies on the effectiveness of a training program revealed the following results: the sum of squares between groups was larger in Study 1 than in Study 2; the sum of squares total is smaller in Study 1 than in Study 2. Using η2, in which study will the effect size be larger?
Answer
Correct Answer:
Study 1
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9. Among the post hoc tests, ________ is too conservative when the number of pairwise comparisons is greater than three.
Answer
Correct Answer:
Bonferroni test
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10. Which of the following is a post hoc test for a one-way between-subjects ANOVA?
Answer
Correct Answer:
Tukey’s HSD test
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11. When the variability attributed to between groups is less than the variability attributed to error, then the value of the test statistic for a one-way between-subjects ANOVA is:
Answer
Correct Answer:
Not significant.
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12. Computing a one-way between-subjects ANOVA is not appropriate when:
Answer
Correct Answer:
The same participants are observed in each of two or more groups for one factor.
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13. A researcher compares differences in response to shock among rats given an electric stimulation of 1, 3, and 5 volts. If she observes 20 rats in each group, then what are the degrees of freedom for the one-way between-subjects ANOVA?
Answer
Correct Answer:
(2, 57)
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14. The number of levels of the factor in a study is indicated by:
Answer
Correct Answer:
K.
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15. Observing different participants one time in each group is referred to as:
Answer
Correct Answer:
Between subjects.
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16. The variation attributed to mean differences within each group is called as _____
Answer
Correct Answer:
Both a and b
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17. Sum of Squares Within Groups is the _____ attributed to variability within each group.
Answer
Correct Answer:
Sum of squares
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18. Sum of Squares Total is the overall sum of square roots across all groups.
Answer
Correct Answer:
False
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19. The sum of squares attributed to variability within each group is known as_____
Answer
Correct Answer:
Both a and c
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20. Studentized Range Statistic is used in the formula to find the critical value for the _____ post hoc test
Answer
Correct Answer:
Honestly Significant Difference
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21. Any variation that can be measured in a study is known as Source of Variation.
Answer
Correct Answer:
True
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22. Post Hoc Tests are necessary when k is _____ because multiple comparisons are needed.
Answer
Correct Answer:
=2
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23. Pairwise Comparison is a statistical comparison for the difference between two group_____
Answer
Correct Answer:
Mean
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24. One-Way Between-Subjects ANOVA is a statistical procedure used to test hypotheses for one factor with_____ levels concerning the variance among the group means.
Answer
Correct Answer:
Two or more
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25. Observed Power is used to estimate the likelihood of detecting a population effect, assuming that the observed results in a study reflect _____ effect in the population.
Answer
Correct Answer:
True
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26. Mean Square Error is the _____of the test statistic for an ANOVA.
Answer
Correct Answer:
Denominator
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27. Mean Square Between Groups is the _____ of the test statistic for an ANOVA.
Answer
Correct Answer:
Numerator
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28. Levels of the Factor is the number of groups or different ways in which a _____ variable is observed.
Answer
Correct Answer:
Both b and c
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29. _____ is the test statistic for an ANOVA.
Answer
Correct Answer:
Both a and b
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30. F Obtained is computed as the mean square between groups divided by the mean square within groups.
Answer
Correct Answer:
Both b and c
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31. F Obtained is computed as the mean square between groups divided by the mean square within groups.
Answer
Correct Answer:
Both b and c
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32. F Distribution is a _____ distribution derived from a sampling distribution of F ratios.
Answer
Correct Answer:
Positively Skewed
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33. Experimentwise Alpha is the probability of committing a _____ error for all tests, when multiple tests are conducted on the same data.
Answer
Correct Answer:
Type I
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34. The degrees of freedom associated with the error variance in the denominator are known as_____
Answer
Correct Answer:
All of these
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35. Degrees of Freedom Numerator are equal to_____
Answer
Correct Answer:
K-1
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36. The degrees of freedom associated with the error variance in the denominator are known as_____
Answer
Correct Answer:
All of these
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37. Degrees of Freedom Denominator are equal to_____
Answer
Correct Answer:
N-k
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38. Degrees of Freedom Between Groups are equal to _____
Answer
Correct Answer:
K-1
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39. Between-Subjects Design is a research design in which we select _____ samples.
Answer
Correct Answer:
Independent
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40. Between-Groups Variation is the variation attributed to _____ between groups.
Answer
Correct Answer:
Mean Difference
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41. Between-Groups Variation is the variation attributed to _____ between groups.
Answer
Correct Answer:
Mean Difference
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42. In Analysis of Variance (ANOVA) the value of k is _____
Answer
Correct Answer:
≥ 2
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43. In Analysis of Variance (ANOVA) the value of k is _____
Answer
Correct Answer:
≥ 2
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Statistics (Social And Behavioral Sciences) MCQs | Topic-wise
