Statistics Calculator

Enter a list of numbers (comma or space-separated) to calculate mean, median, mode, range, variance, and standard deviation.

Sorted Values

Formulas

Mean = Σx / n
Median = middle value of sorted data (or average of two middle values)
Mode = value(s) that appear most frequently
Population Variance (σ²) = Σ(x − μ)² / n
Sample Variance (s²) = Σ(x − x̄)² / (n − 1) - uses Bessel's correction
Standard Deviation = √Variance

Population vs. Sample

Use population std dev (σ) when your data is the entire population. Use sample std dev (s) when your data is a subset - it corrects for bias using n−1 (Bessel's correction).

Input Formats

Separate numbers with:

  • Commas: 1, 2, 3, 4
  • Spaces: 1 2 3 4
  • Newlines (one per line)
  • Mixed separators

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Percentage Calculator
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