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A researcher used a one-factor ANOVA for between-groups to test the effectiveness of four teaching methods for autistic children.

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. missing values in the table

         

          B. Do these data indicate any significant differences among the four teaching methods (assume p < .05)?

             

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, η2

conclusion

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