Statistics Genie Pro

Every test, your choice of each. The arithmetic runs in your browser, so nothing you paste here is sent anywhere.

Data One column, or several separated by commas or tabs. Header row optional.

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

How to run it

Confidence Tails Test the mean against Paired (same subjects twice) Pooled variance (Student's, not Welch)

Welch is the default and usually the right one: it does not assume the two groups have equal variance, an assumption that is often false and rarely checked. Tick pooled only when a question specifically asks for Student's t.