How it works
s = √(Σ(x − x̄)² ÷ (n − 1)). The population version divides by n.
Standard Deviation Calculator
Sample and population standard deviation.
Your details
Sample std. deviation
13.4907
Population std. deviation
12.3153
Mean
18
Count
6
Sample and population standard deviation.
s = √(Σ(x − x̄)² ÷ (n − 1)). The population version divides by n.