You can use the one-sample Kolmogorov-Smirnov procedure to test the null hypothesis that a sample comes from a particular distribution. Four theoretical distribution functions are available--normal, uniform, Poisson, and exponential. Optionally, you can request descriptive statistics and/or quartiles of the test variable.

- If you want to compare the distributions of two variables, use the two-sample Kolmogorov-Smirnov test in the Two-Independent-Samples Tests procedure.
- If your variable is scale, more statistics and tests of normality are available through the Explore procedure.