1- Open SPSS -------2- Analyze------3- Descriptive statistics--------4- Explore-------5- Add groups to the Dependent List box-------6- Press the Plots button-------7- Check option Normality plots with tests.-------8. Press the Continue button -------9- Press the Ok button ------------- 10- Now report the results of the tests of Normality table
***If you have less than 30 (or 50) samples, use the Shapiro-Wilk test, and if more than 30 (or 50), use the Kolmogorov–Smirnov test.