Graziano and Raulin (8th ed)Graziano & Raulin
Research Methods (8th edition)

Answer

 

Listed below are the descriptive statistics for the groups.

N Mean Standard Deviation
Group 1 10 5.5 1.96
Group 2 10 6.9 2.28
Group 3 10 4.1 2.15

Listed below is the ANOVA summary table.

Source df SS MS F
Between 2 39.2 19.6 5.61
Within 27 94.3 3.493  
Total 29 133.5    

The critical value of F (alpha = 0.05 and dfs of 2 and 27) is 3.35.

Therefore, the F-ratio is significant and at least of of the groups is significantly different from at least one other group.

 

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