Statistics Calculator
Enter a list of numbers to get mean, median, mode, variance and standard deviation at once — both population and sample, in your browser.
🔒 All calculations happen only in your browser.
Every summary at once
Enter numbers separated by commas, spaces or newlines and get count, sum, mean, median, mode, min, max and range together — a single table summarizing grades, experiment data or survey responses.
Variance and std dev, both bases
Spread is shown as variance and standard deviation for both population (σ) and sample (s). Use population for full data, sample when estimating from a subset. For 2,4,4,4,5,5,7,9 the mean is 5 and the population standard deviation is 2.
Median and mode
When outliers are present the median represents data better than the mean. The mode (most frequent value) can be multiple, and all are shown, so the three together reveal the distribution's shape.
Frequently asked questions
What does it compute?
Count, sum, mean, median, mode, min, max, range, plus population and sample variance and standard deviation.
Population vs sample std dev?
Use population (divide by n) for full data, sample (divide by n−1) for a subset; both are shown.
Can there be multiple modes?
Yes; all most-frequent values are listed, and if every value is unique there is no mode.
Is my data stored?
No. Everything is computed only in your browser.