Descriptive Statistics Calculator

Paste a list of numbers to get the mean, median, mode, range, variance and standard deviation at once.

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8Count (n)
40Sum
5Mean
4.5Median
4Mode
2Minimum
9Maximum
7Range
4Population variance
2Population std dev (σ)
4.5714Sample variance
2.1381Sample std dev (s)

Population statistics divide by n; sample statistics divide by n − 1 (Bessel's correction), giving a slightly larger spread that better estimates a wider population from a sample. Mode shows every value tied for the highest frequency, or “none” when all values are unique. Everything is computed in your browser — nothing is uploaded.

How to get a statistics summary

Paste or type your numbers into the box, separated by commas, spaces or new lines. The full summary — count, sum, mean, median, mode, range, variance and both standard deviations — appears instantly below and updates as you edit.

Reading the results

Mean, median and mode describe the centre of your data; range and standard deviation describe its spread. Choose the population figures if your numbers are the whole group, or the sample figures if they are a sample of a larger population.

Questions

What is the difference between population and sample standard deviation?
Population standard deviation divides the sum of squared deviations by n; sample standard deviation divides by n − 1 (Bessel's correction). Use the sample version when your numbers are a sample drawn from a larger group, and the population version when they are the entire group.
How is the mode found when several values tie?
The mode is the most frequent value. If several values share the highest frequency, all of them are shown. If every value appears the same number of times, the data has no mode.
How should I enter my numbers?
Type or paste them separated by commas, spaces, semicolons or new lines — for example 2, 4, 4, 4, 5, 5, 7, 9. Any non-numeric text is ignored, and the summary updates as you edit.
Are my numbers uploaded anywhere?
No. Every statistic is computed in your browser as you type, so nothing is ever sent to a server.