Answers to 9.3 repeated measures ANOVA

1. Does students differ on their test scores (English, Reading, Math, Writing)?

   • Based on your understanding of the nature of the test scores, which statistic should you use? (answer = repeated measures ANOVA)

   • Should you apply a sphericity correction? If so, which one? (answer = yes, Huynh-Feldt)

   • Do students differ on their test scores? (answer = yes)

   • Should you perform a planned contrast or post hoc comparison? (answer = yes)

   • What are the results of the post hoc comparison?