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Sum of Squares Within Groups
The sum of squares within groups () is an intermediate calculation in an analysis of variance that represents the total variation based on the differences among the individual scores within each specific group. This value must be computed as a prerequisite step before calculating the mean squares within groups.
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Research Methods in Psychology - 4th American Edition @ KPU
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Mean Squares Within Groups
In an analysis of variance, what does the sum of squares within groups () represent?
In an analysis of variance, the sum of squares within groups () is calculated by measuring how far each individual participant's score deviates from the overall grand mean of all participants combined.