Standard Deviation Calculator
Calculate statistical measures for your data set
Data Values
Enter comma-separated numbers
Separate values with commas (e.g., 1, 2, 3, 4, 5)
Formulas
Mean
μ = (Σx) / n
Population Standard Deviation
σ = √(Σ(x - μ)² / n)
Sample Standard Deviation
s = √(Σ(x - x̄)² / (n - 1))