Scenario: You want to compare the mean test scores between two independent groups (e.g., Treatment Group vs. Control Group). Select the correct menu path.
Review the ANOVA output table below and answer the questions:
ANOVA: Exam Performance by Study Method
| Source | Sum of Squares | df | Mean Square | F | Sig. |
|---|---|---|---|---|---|
| Between Groups | 142.500 | 2 | 71.250 | 5.833 | .006 |
| Within Groups | 329.500 | 27 | 12.204 | ||
| Total | 472.000 | 29 |
1. Based on the "Sig." value (.006), is there a statistically significant difference among study methods at α = .05?
2. How many distinct study method groups were compared in this analysis? (Hint: df between = k - 1)
1. You want to create a composite score "TotalScore" by adding Quiz1 and Quiz2. Which SPSS dialog box should you open?
2. When converting continuous Age values into Age Groups (e.g., 18-30 = 1, 31-50 = 2), why is "Recode into Different Variables" preferred over "Recode into Same Variables"?