Can SPSS perform a Dunn's nonparametric comparison for post hoc testing after a Kruskal-Wallis test?
Resolving The Problem
SPSS Statistics added the Dunn or Dunn-Bonferroni post hoc method following a significant Kruskal-Wallis test in the NPTESTS procedure (Analyze>Nonparametric Tests>Independent Samples in the menus) in Version 19. It is not available in earlier versions.
In Version 19 and later, if you specify Analyze>Nonparametric Tests>Independent Samples, specify one or more appropriate dependent variables and a grouping factor with more than two levels, pairwise comparisons using the Dunn-Bonferroni approach are automatically produced for any dependent variables for which the Kruskal-Wallis test is significant. If you are looking at Model Viewer output, you need to double click on the Hypothesis Test Summary to activate the Model Viewer. When the Model Viewer opens, look in the lower right of the screen for the View drop-down menu and select Pairwise Comparisons to see the post-hoc test results.
16 April 2020