I'm trying to set up an ANCOVA with covariates. I have FD as one covarate and 4 groups (numbered 1, 2,3,4)
How do I set up the analysis. Can I load in an FD.txt file and a file with groups listed as 1-4, or do I make a multicolumn file with 5 columns, or do I need a separate file for each group, as well as 1 for FD? Also, how will I know from the output that the covariate has been removed from the data prior to the group F test being computed?