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# ANOVA 2: Calculating SSW and SSB (total sum of squares within and between)

**Khan Academy**, 2012

Level: beginner

The total sum of squares and the total degrees of freedoms are disaggregated by calculating in sample variance and "between" sample variance and their respective degrees of freedoms. It is demonstrated numerically that both these measures add up to the total sum of squares and the total degrees of freedom.

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