Standard Deviation Calculator

Calculate standard deviation, variance, mean, sum of squares, and standard error of the mean

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Calculation Method:

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Results

Count (n): 0

Mean (x̄): 0

Sum of Squares (SS): 0

Variance (σ² or s²): 0

Standard Deviation (σ or s): 0

About Standard Deviation

Standard deviation is a measure of how spread out numbers are from their mean. A low standard deviation means the numbers are close to the mean, while a high standard deviation means the numbers are more spread out.

Formulas:

Population Standard Deviation: σ = √(Σ(x - μ)² / N)

Sample Standard Deviation: s = √(Σ(x - x̄)² / (n - 1))

Where: