Statistics Calculator Online - Mean, Median, Standard Deviation
Enter a list of numbers and get all key statistical measures instantly. Calculates mean, median, mode, range, variance, standard deviation, quartiles, and more.
Statistics Calculator
Calculate mean, median, mode, standard deviation, variance, quartiles, confidence intervals, z-scores, and more with visualizations
Enter your data above to see statistics
Supports comma-separated, space-separated, or newline-separated numbers
Formulas Reference
| Metric | Formula |
|---|---|
| Mean | Sum(x) / n |
| Variance (pop) | Sum((x - mean)^2) / n |
| Variance (sample) | Sum((x - mean)^2) / (n-1) |
| Std Deviation | sqrt(Variance) |
| Standard Error | SD / sqrt(n) |
| IQR | Q3 - Q1 |
| Coeff. of Variation | (SD / |Mean|) * 100% |
| Skewness | Sum(((x - mean) / SD)^3) / n |
| Kurtosis (excess) | Sum(((x - mean) / SD)^4) / n - 3 |
| Z-score | (x - mean) / SD |
| 95% CI | Mean +/- 1.96 * SE |
Quick Start
- 1Enter your numbers separated by commas or newlines
- 2All statistical measures are calculated instantly
- 3Review mean, median, mode, and standard deviation
- 4Copy individual values or the full summary
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