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R Statistical Programming Tutorial• 6 min read
ANOVA: Multi-Group Variance Analysis
Compare means across 3 or more groups with aov() (Analysis of Variance) and post-hoc Tukey HSD tests.
Why ANOVA Instead of Multiple T-Tests?
Running multiple pairwise t-tests across 4 groups inflates the cumulative false positive error rate. One-way ANOVA tests whether ANY group mean differs significantly via an omnibus F-test.
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Test Yourself With Exercise
Which function fits an Analysis of Variance model in R?