Standard Deviation Calculator
Sample standard deviation (s)
2.1381
- Sample variance (s²)
- 4.5714
- Mean
- 5
- Count (n)
- 8
- Sum of squared deviations
- 32
- Divisor
- n − 1 = 7
- Standard error of the mean
- 0.7559
- Coefficient of variation
- 42.76%
Steps8 rows
| x | x − mean | (x − mean)² |
|---|---|---|
| 2 | -3 | 9 |
| 4 | -1 | 1 |
| 4 | -1 | 1 |
| 4 | -1 | 1 |
| 5 | 0 | 0 |
| 5 | 0 | 0 |
| 7 | 2 | 4 |
| 9 | 4 | 16 |