I’ve run an analysis of covariance in SPSS and I now want to graph the adjusted means as a box plot (i.e. I want the graph to illustrate the range/variability in the dependent variable not just the different groups’ mean). As far as I can tell SPSS does not give you this plot option as part of the GLM analysis.
Does anyone know of a way to graph the adjusted means? Or a way to compute the adjusted means within the datafile?