A hospital wants to know how a homeopathic medicine for depression performs in comparison to alternatives. They administered 4 treatments to 100 patients for 2 weeks and then measured their depression levels. The data, part of which are shown above, are in depression.sav. Data Inspection – Split Histogram Before running any statistical tests, let’s first just […]
SPSS One-Way ANOVA tests if the means on a metric variable for three or more populations are all equal. * The populations are identified in the sample by a categorical variable. For a very simple explanation of the basic idea, see ANOVA – What Is It?. SPSS One-Way ANOVA Example A farmer wants to know if the weight of parsley plants is […]
ANOVA -short for “analysis of variance”- is a statistical technique for testing if 3(+) population means are all equal. ANOVA – Null Hypothesis Test Statistic – F Assumptions for ANOVA Effect Size – (Partial) Eta Squared ANOVA – Post Hoc Tests The basic idea behind ANOVA: are 3(+) population means all equal? The two simplest […]
SPSS One-Way ANOVA Tutorials ANOVA – Simple Introduction SPSS One-Way ANOVA SPSS One-Way ANOVA with Post Hoc Tests SPSS Two-Way ANOVA Tutorials SPSS Two Way ANOVA – Basics SPSS Two-Way ANOVA with Interaction Repeated Measures ANOVA Tutorials Repeated Measures ANOVA – Simple Introduction SPSS Repeated Measures ANOVA – Tutorial SPSS Repeated Measures ANOVA – Example […]
