The following data were collected from a repeated_measures study. a. Determine i

Question

The following data were collected from a repeated_measures study. a. Determine if are any significant differences among the four treatments. Use the .05 level of significance. Critical value is 3.86. b. Compute the percentage of variance explained by the treatment effects (eta^2) The following table summarizes the results of a two-factor ANOVA evaluating an independent-measures experiment with two levels of factor A three levels of factor B, and n = 8 participants in each treatment condition a. Fill in all missing values in the table. b. Compute eta^2 (the percentage of variance accounted for) for each of the main effects and for the interactions

Explanation / Answer

SUMMARY Groups Count Sum Average Variance A 4 24 6 8 B 4 16 4 4.666667 C 4 12 3 8.666667 D 4 8 2 2.666667 ANOVA Source of Variation SS n^2 df MS F Between 28.75 0.277108 3 9.583 3.876 Within 75 0.722892 12 6.25 -Error 22.25 0.214458 9 2.472 -Subjects 52.75 0.508434 3 17.583 Total 103.75 15

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