Conduct an analysis of variance (ANOVA) to check for mean differences between three independent groups on any variable of your choice (i.e., Is there a difference in coffee consumption per week between those under age 18, those between 18-25, and those above age 25?).
Each sample should have a minimum of n = 6 participants.
What to turn in:
State your research question (use the example from above as a model).
State the null and alternative hypotheses for your ANOVA.
Using ? = .05 for your test, indicate the critical F-value, conduct the necessary calculations (show your work whenever possible) and state your conclusions regarding the original hypotheses (Reject H0 or Fail to Reject H0).
Calculate and interpret ?2 as a measure of effect size.
Using Tukeys post-hoc test, check for specific significant differences between groups Note: Please do this even if your conclusion above is Fail to Reject H0
Write a conclusion statement, as would appear in a published report.
Extra Credit (Up to 5 points):
Present your findings using an ANOVA summary table as discussed on p. 361 of the textbook.
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