An independentmeasures research study compares three treatme

An independent-measures research study compares three treatment conditions using a sample of n = 5 in each treatment. For this study, the three totals are, T1 = 5, T2 = 10, and T3 = 15. What value would be obtained for the grand mean, Mgrand?

2

10

5

15

Solution

grand mean = T1+T2+T3/3

T1+T2+T3 = 30

GRAND MEAN = 30/3 = 10