The following data summarize the results from an independent-measures study comparing three treatment conditions. a. Use an ANOVA with α = .05 to determine whether there are any significant differences among the three treatment means. b. Calculate h^2 to measure the effect size for this study. c. Write a sentence demonstrating how a research report would present the results of the hypothesis test and the measure of effect size.
Added by Sergio M.
Step 1
First, we need to calculate the Sum of Squares Between (SSB), Sum of Squares Within (SSW), and the total Sum of Squares (SST). Given data: | Treatment | Scores | |-----------|--------| | A | 2, 5, 4| | B | 6, 8, 9| | C | 3, 1, 7| Show more…
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The following data are from an independent-measures experiment comparing two treatment conditions: Treatment 1 Treatment 2 6 19 13 9 8 18 4 10 13 12 4 14 11 19 5 11 Do these data indicate a significant difference between the treatments at the .05 level of significance Compute r2 to measure the size of the treatment effect. Write a sentence demonstrating how the outcome of the hypothesis test and the measure of effect size would appear in a research report.
Sri K.
The following data are from an independent-measures experiment comparing two treatment conditions: Treatment 1 Treatment 2 6 19 13 9 8 18 4 10 13 12 4 14 11 19 5 11 a. Do these data indicate a significant difference between the treatments at the α = .05 level of significance? b. Compute r2 to measure the size of the treatment effect. c. How would the outcome of the hypothesis test and the measure of effect size ?
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