Give it your numbers.

Paste a column, or two columns for a comparison. It works out what you have and what can honestly be done with it.

Your data One value per line, or columns separated by commas or tabs. A header row is fine.

or drop a CSV or Excel file here .csv, .xlsx, .txt

Confidence

What it will tell you

What your data looks like — centre, spread, shape, outliers
A histogram and a box plot
Whether the usual test is safe on this data, before the p-value
The test itself, with the statistic, degrees of freedom and p
What that means in a sentence you could write down

Number three is the point

A p-value can be produced for any numbers at all. Whether it means anything depends on assumptions almost nobody checks. This says so first — eight wildly skewed values do not become a finding because the arithmetic worked.

No numbers yet?

The ZAZ Data Maker builds a dataset to analyse — a teaching set whose answer you already know, survey data, or plain columns from a distribution. It can send the numbers straight into the box on this page.

Need more?

Statistics Genie Pro adds ANOVA, regression diagnostics, chi-square tables, every distribution, and choice over each test.