Statistics Calculator

Descriptive statistics summarize a dataset with a few key numbers — measures of center, spread, and distribution. This calculator computes the full suite of descriptive statistics from any list of numbers you enter. How to enter data: Type numbers separated by commas, spaces, or new lines. For example: 23, 45, 12, 67, 34. Paste directly from a spreadsheet column — comma or newline-separated values are both accepted. Up to 10,000 values are supported. Measures of center (central tendency): Mean (average) — sum of all values divided by count. Sensitive to outliers. Median — the middle value when sorted. Robust to outliers. Mode — the most frequently occurring value(s). Useful for categorical-like numeric data. Geometric mean — useful for growth rates and financial returns. Harmonic mean — useful for rates and ratios. Measures of spread (dispersion): Range — maximum minus minimum. Simplest measure of spread. Variance — average of squared deviations from the mean. Population and sample variance both shown. Standard deviation — square root of variance. Same units as the data. Shows typical distance from the mean. Coefficient of variation — standard deviation as a percentage of mean. Compares spread across datasets with different scales. Interquartile range (IQR) — difference between 75th and 25th percentiles. Robust to outliers. Percentiles and quartiles: Q1 (25th), median (50th), Q3 (75th) percentile. Custom percentile input. Distribution shape: Skewness — positive skew means tail on right (outliers above mean), negative means tail on left. Kurtosis — measures tail heaviness relative to a normal distribution.