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| Skewness: | |
| Kurtosis: |
Free online Skewness and Kurtosis Calculator – calculates the skewness and kurtosis of a distribution or dataset, simply enter your data into the text box and click the “Calculate” button.
Skewness and Kurtosis Formula
Skewness and kurtosis are statistical measures that describe the shape and distribution of a dataset.
Skewness
Skewness measures the asymmetry of a distribution
skewness formula for data sample
g = Σ(Xi – x̄)³ / s * [n/(n-1)(n-2)]
- g = skewness
- Xi = individual observation
- x̄ = mean of dataset
- s = standard deviation
- n = Number of observations
Kurtosis
Kurtosis measures the “tailedness” or the thickness of the tails of a distribution
Kurtosis formula for data sample
K = Σ(Xi – x̄)⁴ / s * [n(n+1)/(n-1)(n-2)(n-3)] – 3[(n-1)² / (n-2)(n-2)]
- k = kurtosis sample
- Xi = individual observation
- x̄ = mean of dataset
- s = standard deviation
- n = Number of observations