This tool will create a new feature class containing the groups that have been defined. You can see this feature class in the following screenshot:
You may also want to remove the outline from the boundaries of the polygons to see the groups better:
The tool will also create an output PDF file containing tables and box plots. Open that file now. It will be located at C:\GeospatialTraining\SpatialStats\GroupingAnalysis.pdf or wherever you defined in the input parameters.
The first section in the report is Group-Wise ...