One-Way ANOVA - calculate required sample size with SPSS

// One-Way ANOVA - calculate required sample size with SPSS //

The one-way ANOVA (analysis of variance) is a parametric statistical method that is used to test the means of at least three groups for differences.

In the run-up to an empirical study or data collection for the one-way ANOVA, the necessary sample size must be determined, for example using SPSS. The minimum sample size depends on the assumed effect size (f or Eta²), the alpha level, the statistical power and the number of groups and group weights (ratio to total sample size).

At the end, I show examples of different minumum sample size for the one-way ANOVA with different characteristics of the input parameters mentioned using SPSS.


Introduction to G*Power:
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🎥    • G*Power: A (short) Beginner's Guide  


⏰ Timestamps:
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0:00 Introduction
0:18 Selecting the one-way ANOVA in SPSS
0:24 I: Select type of power analysis
0:30 II: Power (1-beta error)
1:18 III: Effect size
2:11 IV: number of groups
2:50 V: Alpha error probability


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