D4SPSSIntermediateAbout 35 min to complete
One-way ANOVA and post hoc
Why three t-tests is the wrong answer, with the inflated-error arithmetic on the slide.
Slides · Dataset
About 35 minutes to complete
Enrol to open the slides and download the data.
What this module covers
why three t-tests is the wrong answer, with the inflated-error arithmetic on the slide; what the F ratio compares; the assumptions and Levene's test; the menu path with Options and Post Hoc; reading the ANOVA table; choosing a post hoc test (Tukey, Bonferroni, Games-Howell) and the rule for each; Welch's ANOVA when variances are unequal; eta squared and partial eta squared; APA reporting.
By the end of it
- Why three t-tests is the wrong answer, with the inflated-error arithmetic on the slide
- What the F ratio compares
- The assumptions and Levene's test
- The menu path with Options and Post Hoc
- Reading the ANOVA table
- Choosing a post hoc test (Tukey, Bonferroni, Games-Howell) and the rule for each
- Welch's ANOVA when variances are unequal
- Eta squared and partial eta squared
The dataset
Antenatal care and birth outcome — Sigma teaching dataset
A teaching dataset of 300 cases, generated from a fixed seed so every figure in the module reproduces exactly.
- CodebookIncluded
- Dataset (CSV)Included
- Dataset (CSV)Included
- SPSS syntaxIncluded