Statistics calculator

How it works

Paste your data from Excel or type it in. Get the answer, every step, and what it means in plain English.

Numbers can be separated by spaces, commas or new lines. Headings are skipped.

Worked out in your browser. Your data isn't uploaded, and the last data you used is kept in this browser.

How it works & questions

How it works

  1. 1

    Pick a test

    Describe your data, compare means with a t-test, test counts with chi-square, or check for a link with correlation and regression.

  2. 2

    Paste your data

    Straight from Excel or Google Sheets, or type numbers separated by spaces or commas.

  3. 3

    Read what it means

    You get the p-value, a plain-English verdict, an APA line for your report, a chart and every step.

Questions

Which t-test should I use?

Two separate groups of people or samples: two-sample. The same people measured twice (before and after): paired. One group against a known value: one-sample.

Are the answers the same as SPSS or Excel?

Yes. The results are checked against SciPy, the standard Python statistics library. Quartiles use the same method as Excel's QUARTILE.INC.

What does significant mean?

That a result this big would be unlikely if there were really no effect (p below 0.05 by default). It doesn't say the effect is large, which is what the effect size is for.

Is my data uploaded?

No. Everything is worked out in your browser.