Students who are new to statistics tend to find it tricky to remember which test to use under which circumstances. The following diagram is intended as a decision aid *only*. There are many *many* more statistical tests that are not shown here, but these are the basic ones most commonly taught on psychology courses.

Even if you end up finding out that you need a more complex or niche statistical test, an *aide memoire* like this can still be useful if it reminds of the relevant keywords to search.

Remember, always check the assumptions of the test you choose.