A researcher tests for mean differences between three samples, each with n=4 participants, and calculates the following: Treatment 1 Treatment 2 Treatment 3 M = 3 M = 4 M = 5 T = 12 T = 16 T = 20 SS = 8 SS = 12 SS = 16 N = 12, G = 48, ΣX2 = 236 What value is used for dfwithin in this analysis? a. 9 b. 44 c. 4 d. 11

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A researcher tests for mean differences between three samples, each with n=4 participants, and calculates the following:

Treatment 1

Treatment 2

Treatment 3

M = 3

M = 4

M = 5

T = 12

T = 16

T = 20

SS = 8

SS = 12

SS = 16

N = 12, G = 48, ΣX2 = 236

What value is used for dfwithin in this analysis?

a. 9
b. 44
c. 4
d. 11
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