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One-Way ANOVA Is Applied to Independent Samples Taken from Three n1=n _ { 1 } =

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One-way ANOVA is applied to independent samples taken from three normally distributed populations with equal variances. The following summary statistics are calculated: n1=n _ { 1 } = 10, xˉ1=\bar { x } _ { 1 } = 40, s1=s _ { 1 } = 5. n2=n _ { 2 } = 10, xˉ2=\bar { x } _ { 2 } = 48, s2=s _ { 2 } = 6. n3=n _ { 3 } = 10, xˉ3=\bar { x } _ { 3 } = 50, s3=s _ { 3 } = 4. The between-treatments variation equals:  A. 460. B. 688. C. 560. D. 183.\begin{array}{|l|l|}\hline \text { A. } & 460 . \\\hline \text { B. } & 688 . \\\hline \text { C. } & 560 . \\\hline \text { D. } & 183 . \\\hline\end{array}

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