Standard Deviation Calculator
Calculate population and sample standard deviation, variance, and mean with step-by-step breakdown.
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Standard Deviation Calculator
Population SD (σ)
4.899
Sample SD (s)
5.2372
Population Variance (σ²)
24
Sample Variance (s²)
27.4286
Mean (μ)
18
Count (N)
8
Sum of Squares (SS):192
Step-by-Step Calculations
| Number (x) | Deviation (x - μ) | Squared Dev (x - μ)² |
|---|---|---|
| 10 | -8 | 64 |
| 12 | -6 | 36 |
| 23 | 5 | 25 |
| 23 | 5 | 25 |
| 16 | -2 | 4 |
| 23 | 5 | 25 |
| 21 | 3 | 9 |
| 16 | -2 | 4 |