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Statistics Calculator
Paste a list of numbers and get the full set of descriptive statistics, all computed in your browser.
HOW TO USE
- 1Type or paste your list of numbers into the box. Separate values with commas, spaces, new lines or semicolons, any mix works.
- 2Negative numbers and decimals are fine, e.g. -1.5, 0.25. Anything that is not a number is ignored.
- 3Results update live as you type: count, mean, median, mode, range, variance and standard deviation.
- 4Variance and standard deviation are shown for both the population and the sample formula — pick the one that matches your data.
EXAMPLE
INPUT
2, 4, 4, 4, 5, 5, 7, 9
OUTPUT
Mean 5 · Median 4.5 · Mode 4 · Range 7 · σ² 4 · σ 2
FAQ
What is the difference between population and sample variance?
Population variance divides by the number of values (n) and is used when your list is the entire group. Sample variance divides by n − 1 and is used when your list is a sample of a larger group — it gives a slightly larger, unbiased estimate.
How is the median found?
The values are sorted, and the middle one is taken. With an even count, the median is the average of the two middle values, for example 4 and 5 in the sample above give 4.5.
What happens when there are multiple modes?
All tied most-frequent values are shown — a list like 1, 1, 2, 2, 3 reports modes 1 and 2. When every value appears exactly once, the result reads "No mode".
Can I copy a column of numbers from a spreadsheet?
Yes. Pasting a column of values from a spreadsheet or a CSV export works directly, since new lines and commas are both treated as separators.
Is my data sent anywhere?
No. All calculations run entirely in your browser, your numbers never leave your device.