Sum of Squares Calculator
Total squared deviation from the mean — with the working shown.
Your data
Separate values with commas, spaces, or new lines. Pasting from Excel works.
Result
910Sum of squares (Σ of squared deviations from the mean)
Count (n)
6
Mean (x̄)
18
Variance (sample)
182
Std deviation
13.4907
Distribution
Show the work
SS = Σ (xᵢ − x̄)²
Mean x̄ = 18 over n = 6 values.
| xᵢ | xᵢ − x̄ | (xᵢ − x̄)² |
|---|---|---|
| 4 | -14 | 196 |
| 8 | -10 | 100 |
| 15 | -3 | 9 |
| 16 | -2 | 4 |
| 23 | 5 | 25 |
| 42 | 24 | 576 |
| Sum | 910 | |