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7.12. If means for a two-way ANOVA were plotted on a graph, an interaction effect might be indicated by: a. Parallel lines b. Curved lines *c. Crossed lines d. None of the above 7.13. To look up an F statistic in a table to assess its significant, how many different degrees of freedom would be needed to obtain a value? a. 1 df *b. 2 dfs c. It would depend on how many groups are in the analysis. d. It would depend on how many factors are in the analysis. 7.14. In an RM-ANOVA, what is removed from the error term (within-subjects variation)? *a. Variation attributable to individual differences b. Variation from interaction effects c. Variation attributable to between-groups differences d. Variation from time or between-treatment differences 7.15. Which of the following is true about RM-ANOVA? a. It is not appropriate for nonexperimental designs. b. It is a less sensitive test of the relationship between the independent and dependent variable than one-way ANOVA. c. It has fewer assumptions than one-way ANOVA. *d. It assumes homogeneity of variances in differences scores between the populations being compared (sphericity). 7.16. The can be used to adjust when one of the assumptions for RM-ANOVA cannot be met. (Fill in the blanks.) a. Mauchly test, F statistic b. Mauchly test, df c. Huynh-Feldt epsilon, F statistic *d. Huynh-Feldt epsilon, df 7.17. Which of the following is a post hoc test? *a. Tukey's HSD test b. Greenhouse-Geisser test c. Planned comparisons test d. Mauchly test 7.18. Which of the following is also called a protected t-test? a. Tukey's HSD test b. Scheffe test *c. Fisher's LSD test d. Duncan's multiple range test 7.19. Which of the following is true about the various multiple comparison tests? a. They are appropriate only for one-way ANOVAs. *b. They can wield confidence intervals of different widths