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 |
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What is Statistics Calculator?
Calculate comprehensive descriptive statistics for any dataset.
Enter numbers separated by commas, spaces, or newlines and get instant results for 30+ metrics including mean, median, mode, variance, standard deviation, IQR, skewness, kurtosis, quartiles, percentiles, confidence intervals, z-scores, and outlier detection. Find the mean median and mode of a data set, calculate sample versus population standard deviation, work out the interquartile range, or compute a confidence interval in one place. Visualize your data with SVG histogram, box plot, and number line charts. View step-by-step calculation explanations for key metrics. Supports weighted mean, data import from CSV files, and export of results. All calculations run in your browser.
How to Use Statistics Calculator
- 1Enter your numbers separated by commas, spaces, or newlines in the input area
- 2View instant results organized by category: central tendency, dispersion, and distribution
- 3Switch to the Visualizations tab to see histogram, box plot, and number line charts
- 4Check the Step-by-Step tab for detailed calculation explanations
Frequently Asked Questions
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