Inference and modelling. All of these take a pasted column of data, report n, and show the intermediate quantities a marker expects to see.
15 tools · all free, all computed in your browser
Statistical output here is for coursework and learning. Reported p-values and intervals assume the conditions stated on the page; nothing here checks whether those conditions hold for your data.
Where your institution’s rule differs from the convention a tool uses, your institution is right and the tool is not. These compute; they do not rule.
Calculators are provided for study and planning. Results are not official records, professional advice, or a substitute for your institution's own figures.