In a one-way ANOVA,error variability is computed as the sum of the squared errors,SSE,for all values of the response variable.This variability is the:

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SSE represents the variation within treatments, or the random variation that cannot be explained by the differences between treatments. Therefore, the best choice is B, within-treatments variation. Choice A refers to the total variation, which includes both within- and between-treatments variation. Choice C refers to the variation between treatments, which is measured by the sum of squares due to treatments, or SST. Choice D is not the correct answer, as there is a clear answer for this question.

In a One-Way ANOVA,error Variability Is Computed as the Sum