Answer five questions about your data. Get a suggested test, the assumptions to check, an effect size, and an APA 7-style reporting sentence. Free, no signup, runs entirely in your browser.
Got the test? The next question is whether your data meets its assumptions. The interactive assumption checklist walks you through every check, the thresholds, and what to do when one fails.
Need all seventeen tests in one document? See Choosing & Reporting Statistical Tests: Thesis Survival Guide.