# SSE/Sum of Squares for Error Calculations

I'm trying to calculate the sum of squares for errors (SSE) manually and I was given an example with the answer below, but I cannot figure out how they got the answer. Can you please show, or tell me how they got the answer (20) and what +...+ means between these numbers, because each time I calculate, it comes up to 18 and not 20.

SSE = (6-8)² + (7-8)² +...+ (10-8)² + (11-13)² + (12-13)² +...+ (15-13)² = 20.

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#### Solution Preview

First, why do you get 18? because you are calculating SSE = (6-8)² + (7-8)² + (10-8)² + ...

#### Solution Summary

The solution gives detailed steps on calculating sum of squares for error. All formula and calcuations are shown and explained.

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