Credit: Data Science Central
There are dozens of different hypothesis tests, so choosing one can be a little overwhelming. The good news is that one of the more popular tests will usually do the trick–unless you have unusual data or are working within very specific guidelines (i.e. in medical research). The following picture shows several tests for a single population, and what kind of data (nominal, ordinal, interval/ratio) is best suited to those tests.
Click on the image to zoom in (or click here)