Summarise a set of numbers
A list of numbers only becomes meaningful once you summarise it — the average, the middle value, how spread out the data is. This calculator takes a data set and computes the common statistics: mean, median, mode, range, and standard deviation. It's a quick way to describe data without setting up a spreadsheet formula.
How to use it
- Enter or paste your numbers.
- Read the computed statistics.
- Use them to describe or compare your data.
What the measures tell you
- Mean is the average; median is the middle value, less swayed by outliers.
- Standard deviation shows how spread out the values are.
- Range is the gap between the smallest and largest.
Questions people ask
Mean or median? Use the median when a few extreme values would distort the average — incomes and house prices are classic examples.
Is my data uploaded? No — the calculation runs in your browser.