Standard Deviation Calculator
Calculate population and sample standard deviation with ease
Calculation Results
Data Count
0
Mean (Average)
0
Population STD
0
Sample STD
0
Standard Deviation Formula
Population Standard Deviation: σ = √[Σ(xáµ¢ - μ)² / N]
Sample Standard Deviation: s = √[Σ(xáµ¢ - x̄)² / (n - 1)]
Where:
σ = population standard deviation
s = sample standard deviation
N = number of values in population
n = number of values in sample
xáµ¢ = each value from the population/sample
μ = population mean
x̄ = sample mean
Instructions: Enter numbers separated by commas. For example: 5, 7, 9, 11, 13