[answered] 1. The results from an independent-measures research study

The following summary table presents the results from an ANOVA comparing three treatment conditions with n = 8 participants in each treatment. Complete all missing values. (Hint: Start with the df column.)

 Source SS Df MS Betweentreatments (?) ___________________________ (?) ___________________________ 20 F=(?) ___________________________ Within?treatments (?) ___________________________ (?) ___________________________ (?) ___________________________ Total 124 (?) ___________________________

1. The results from an independent-measures research study indicate that there

are significant differences between treatments, F(2, 30) = 4.80, p &lt; .05.

a. How many treatments were compared in the study?

b. How many individuals participated in the entire study?

2. The following data are constructed so that there is no variability inside any of

the treatment conditions.

a. Before you begin any calculations, predict what value should be obtained for

SSwithin. (Hint: How big are the differences within treatments?)

b. Calculate SStotal and SSbetween. You should find that all of the variability in the

data is between-treatments variability (SStotal = SSbetween).

Treatment

I

4

4

4

4

M=5

SS = 2 II

2

2

2

2

M=2

SS = 8 III

6

6

6

6

M=1

SS = 2 N = 12

G = 48

?X2 = 224 3. The following summary table presents the results from an ANOVA comparing

three treatment conditions with n = 8 participants in each treatment.

Source

Between

treatments

Within

treatments

Total SS

(?)______________ Df

(?)_____________ MS (?)______________

_

124 (?)_____________

_

(?) (?)_____________ 20 F = (?)_________

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