4. In a study, there are three independent groups. In Group 1, the scores are 2, 7, and 3; in Group 2, the scores are 5, 4, and 9; in Group 3, the scores are li,9, and 13. a) Using the deviation-score formulae we used in class (for example, -(X - X)*ind SS. ss and SSa. Does S.- SS+ SS.? (Demonstrate this by cakkulating SS from the raw scores.) b) What are the values of dfie, df., and dfina? e) Present the results so far in an ANOVA summary table. Add an ANOVA F test of the hypothesis that the population group means are equal, using alpha -.05. State your conclusions.

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4. In a study, there are three independent groups. In Group 1, the scores are 2, 7, and 3; in Group 2, the scores
are 5, 4, and 9; in Group 3, the scores are 11, 9, and 13.
a) Using the deviation-score formulae we used in class (for example, SS =2 (X - X)find SS., SSst.
and SSutal. Does SSa SSe+ Ss? (Demonstrate this by calculating SSal from the raw scores.)
b) What are the values of dfit, dfu, and dfa?
e) Present the results so far in an ANOVA summary table. Add an ANOVA F test of the hypothesis that
the population group means are equal, using alpha = .05. State your conclusions.
Transcribed Image Text:4. In a study, there are three independent groups. In Group 1, the scores are 2, 7, and 3; in Group 2, the scores are 5, 4, and 9; in Group 3, the scores are 11, 9, and 13. a) Using the deviation-score formulae we used in class (for example, SS =2 (X - X)find SS., SSst. and SSutal. Does SSa SSe+ Ss? (Demonstrate this by calculating SSal from the raw scores.) b) What are the values of dfit, dfu, and dfa? e) Present the results so far in an ANOVA summary table. Add an ANOVA F test of the hypothesis that the population group means are equal, using alpha = .05. State your conclusions.
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