Chapter 17 Two-way Between-TESTBANK

Chapter 17 Two-way Between-TESTBANK - Chapter 17 Two-way...

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Chapter 17: Two-way Between-Subjects Analysis of Variance Student: ___________________________________________________________________________ 1. How many groups are there in a 3 X 3 factorial design? A. 3 B. 6 C. 9 D. 2 2. How many levels of variable A are there in a 3 X 3 factorial design? 3. What is one of the main advantages of the two-way between-subjects factorial design? 4. A classmate describes her study as follows: “ I have to independent variables, one has three levels and the other has two levels. I will be randomly assigning people to one of the study groups, exposing them to one level of each independent variable, then testing them on my dependent variable.” Which type of statistical analysis would be most appropriate?
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5. If the ANOVA method is used to test for differences between means , then why is it called an “analysis of variance ”? A. Because the amount differences among the set of group means is determined by calculating the variance of those group means. B. Because means and variances are basically the same thing. C. Because statisticians feel it is important to have multiple names for the same thing. D. Because the differences between means is determined by averaging the variances. 6. In the two-way ANOVA, which of the following sources of variability is NOT a component of the sum of squares between? 7. Source SS df MS F A 11.07 1 11.07 10.25 B 9.83 1 9.83 9.10 AXB 2.87 1 2.87 2.66 Within Cells (error) 82.4 76 1.08 Total 106.17 79 Cell Means 12.1 8.3 10.2 7.5 5.5 6.5 9.8 6.9 8.4 Note: The critical F value for degrees of freedom (1,76) is 3.96. Which of the F values in the ANOVA summary table provided above are statistically significant? A. Only the main effect of A is statistically significant. B. Only the interaction (A X B. is statistically significant. C. The main effect of A and B are statistically significant, but not the interaction. D. None of the effects are statistically significant. 8. Source SS df MS F A 11.07 1 11.07 10.25
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B 9.83 1 9.83 9.10 AXB 2.87 1 2.87 2.66 Within Cells (error) 82.4 76 1.08 Total 106.17 79 Cell Means 12.1 8.3 10.2 7.5 5.5 6.5 9.8 6.9 8.4 Note: The critical F value for degrees of freedom (1,76) is 3.96. The test for the “main effect” of Variable B focuses on the difference between the _________. A. marginal means 10.2 and 6.5 B. marginal means 9.8 and 6.9 C. cell means 12.1 and 7.5 D. cell means 12.1 and 8.3 9. Note: The critical F value for degrees of freedom (1,76) is 3.96.
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  • Spring '14
  • d., B., c., main effect

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