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Free Statistics Tools
Fast, accurate calculators and a test-picker for the statistics you're actually studying.
Last reviewed: June 2026
Descriptive Statistics Calculator
Mean, median, mode, variance, sample & population standard deviation, quartiles, and the five-number summary — with the formulas shown.
🧭Which Statistical Test Should I Use?
Answer a few questions and get the right test (t-test, z-test, ANOVA, chi-square, regression…) with its assumptions.
📄Statistics Formula Cheat Sheet
Every essential formula in one place, plus a printable z-table and t-table.
Stuck on an actual problem?
Snap a photo of any statistics question and get a full step-by-step solution in the app.
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