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In an analysis of variance, the variability of the group means about a grand mean is calculated by: a.squaring the sum of the within-group variance

In an analysis of variance, the variability of the group means about a grand mean is calculated by:

a.squaring the sum of the within-group variance and between-group variance.

b.squaring the deviation of each score from the grand mean and summing these squares.

c.squaring the deviation of each group mean from the grand mean, multiplying by the number of items in the group, and summing these scores.

d.squaring the deviation of each score from its group mean and summing these scores.

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