Repeated Measures & Independent One-way ANOVA

1. What is the main difference between repeated measures and independent one-way ANOVA?

• • A) Repeated measures involves different participants in each group.

• • B) Independent one-way ANOVA measures the same participants multiple times.

• • C) Repeated measures uses the same participants in all conditions, while independent one-way ANOVA uses different participants for each group.

• • D) Independent one-way ANOVA uses the same participants in all conditions.

2. Which of the following best distinguishes between within-groups design and between-groups variability?

• • A) Within-groups design compares different participants across all conditions; between-groups variability measures the variation within one group.

• • B) Within-groups design uses the same participants in all conditions; between-groups variability reflects differences in group means due to the independent variable.

• • C) Within-groups design is only used in correlational studies; between-groups variability refers to participant bias.

• • D) Within-groups design measures how groups differ over time; between-groups variability refers to measurement error.

3. When would you use an independent one-way ANOVA?

• • A) To compare means across related groups measured multiple times.

• • B) To compare means between different, unrelated groups.

• • C) To compare means between different, unrelated groups.

• • D) To analyze time series data.

4. Which test is commonly used to check for the assumption of sphericity?

• • A) Mauchly's Test

• • B) Levene's Test

• • C) Shapiro-Wilk Test

• • D) Tukey's Test

5. What does the F-ratio in ANOVA compare?

• A) The mean differences within groups

• • B) The variability within groups

• • C) The variability between groups to the variability within groups

• D) The overall sample size

6. In a repeated measures ANOVA, what happens if sphericity is violated?

• • A) You cannot run the analysis.

• • B) You should use an independent one-way ANOVA instead.

• • C) Adjust the degrees of freedom using corrections like Greenhouse-Geisser.

• • D) The results become more accurate.

• • C) Adjust the degrees of freedom using corrections like Turkey's HSD.

7. How many groups are compared in a one-way ANOVA?

• • A) Two groups

• • B) One group

• • C) Three or more groups

• • D) Unlimited groups

8. Which of the following post-hoc tests is usable after a significant one-way ANOVA result?

• • A) Mauchly's Test

• • B) Tukey's HSD

• • C) Greenhouse-Geisser correction

• • D) Kruskal-Wallis test

9. What is the purpose of using a repeated measures design?

• • A) To reduce the need for a large sample size

• • B) To control for individual differences across conditions

• • C) To avoid testing assumptions of normality

• • D) To simplify data analysis

10. What does the term "within-subjects" refer to in repeated measures ANOVA?

• • A) Differences between groups

• • B) Comparisons within the same participants across multiple conditions

• • C) Observations that are unrelated

• • D) The random sampling method