We now can make calculations that represent the total amount of variance found in each of the groups. This is also referred to as the total square sum of scores (divided by n). First the sum of X for each group is separately squared and then the resultant answer is divided by the group size. These calculations need not be done separately when each of the group sizes is the same; this is true for the case at hand (nl = 8, n2 = 8, and n3 = 8). Because most data sets do not entail equal group sizes, however, each of the three calculations is done separately. X..1 are 120, 75, 55