آزمون نرمال بودن پراکندگی داده ها Kolmogorov-Smirnov Test | Shapiro-Wilk normality test

https://www.spss-tutorials.com/spss-kolmogorov-smirnov-test-for-normality/
https://www.spss-tutorials.com/spss-shapiro-wilk-test-for-normality/

Criteria for Selection of statistical tests


Kolmogorov-Smirnov test | Shapiro–Wilk test |


There's 2 ways to run the test in SPSS:

  • NPAR TESTS as found under Analyze SPSS Menu Arrow Nonparametric Tests SPSS Menu Arrow Legacy Dialogs SPSS Menu Arrow 1-Sample K-S... is our method of choice because it creates nicely detailed output.
  • EXAMINE VARIABLES from Analyze SPSS Menu Arrow Descriptive Statistics SPSS Menu Arrow Explore is an alternative. This command runs both the Kolmogorov-Smirnov test and the Shapiro-Wilk normality test.
    Note that EXAMINE VARIABLES uses listwise exclusion of missing values by default. So if I test 5 variables, my 5 tests only use cases which don't have any missings on any of these 5 variables. This is usually not what you want but we'll show how to avoid this.