Question: A researcher used a one-factor ANOVA for between-groups to test the effectiveness of four teaching methods for autistic children. The experiment was conducted with four
A researcher used a one-factor ANOVA for between-groups to test the effectiveness of four teaching methods for autistic children. The experiment was conducted with four samples of n = 12 autistic children in each group.
The results of the analysis are shown in the following summary table:
| Source | SS | df | MS |
|---|---|---|---|
| Between Treatments (F=5.00) | ? | ? | ? |
| Within Treatments | 88 | ? | ? |
| Total | ? | ? |
A. Fill in all missing values in the table. Show your work (i.e., all computational steps for finding the missing values). Hint: start with the df values.
B. Do these data indicate any significant differences among the four teaching methods (assume p < .05)?
Your answer should include:
- the null hypothesis H0 & the alternative hypothesis H1
- the critical F value used for the decision about H0
- if the difference is statistically significant, compute the effect size, ?2
- the conclusion in APA style format.
*NOTE: This is a Psychology Statistics question
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