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Flashcards in Repeated ANOVA Deck (2)
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What is sphericity?

 Variances across repeated measures conditions are likely to be similar, because they come from the same people!
 So, will have less random variance
 No individual differences between conditions
 Similar variance in the difference between conditions


How does the G-G correction work?

 Calculation of variance and F ratio will remain the same
 Changes degrees of freedom: Reduced df means a bigger
effect needed to achieve a significant finding
 Correction is proportional to the magnitude of violation
 SPSS will automatically give you corrections.