BHS 307 Statistics for the Behavioral Sciences

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BHS 307 Statistics for the Behavioral Sciences

• Chapter 25 Repeated Measures ANOVA (F-Test)

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Repeated Measures ANOVA

• Repeated Measures ANOVA like ANOVA but the same
  subjects are measured in each group.
• Estimates of variability are no longer inflated
  by random error due to individual differences.
• A more powerful F-test
• A way to make the denominator smaller.

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Comparison to One-Way ANOVA

• Other assumptions hold (e.g., normality, equal
  variance), but sphericity is an added assumption.
• Counterbalancing may be needed.
• h2 is calculated and interpreted the same way.
• Post-hoc t-tests need to be for paired samples,
  not independent.