Statistics Calculator
Mean, median, mode, range, variance and standard deviation for any data set.
How to use the Statistics Calculator
Paste numbers separated by commas, spaces or new lines. All statistics update instantly.
Formula
σ = √[Σ(x − μ)² ÷ N] s = √[Σ(x − x̄)² ÷ (n − 1)]
Worked example
For 4, 8, 15, 16, 23, 42 the mean is 18 and the median is 15.5.
Frequently asked questions
Population or sample standard deviation?
Use population (σ) when your data is the entire group; sample (s) when it's a sample from a larger group.
Results are estimates for educational and planning purposes. Always confirm important financial, health or legal decisions with a qualified professional. Last reviewed 2026-09-27.