Question: An independent-measures study comparing four treatment conditions with a sample of n = 8 in each condition produces sample means of M1 = 2, M2

An independent-measures study comparing four treatment conditions with a sample of n = 8 in each condition produces sample means of M1 = 2, M2 = 3, M3 = 1, and M1 = 6.
a. Compute SS for the set of 4 treatment means. (Treat the means as a set of n = 4 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, find the 4 treatment totals and compute SSbetween with the computational formula using the T values (see Equation 12.7). You should obtain the same result as in part b.

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