Posted by **Tracy** on Sunday, February 24, 2013 at 5:33pm.

An independent-measures research study compares three treatment conditions with a sample of n = 10 in each condition. The sample means are M1 = 2, M2 = 3, and M3 = 7

a. Compute SS for the set of 3 treatment means. (Use the three means as a set of n = 3 scores and compute SS.)

b. Using the result from part a, compute n(SSmeans). Note that this value is equal to SSbetween (see Equation 12.6).

c. Now, compute SSbetween with the computational formula using the T values (Equation 12.7). You should obtain the same result as in part b.

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