I wanted to carry out a two-way ANCOVA for my data. However, SPSS isn't liking that I have only one IV.
- One IV: Group (3 levels, i.e. 2 experimental groups and a control group),
- One DV: outcome measure (2 levels, i.e. time 1 and time 2),
- One covariate (I have checked and this demographic continuous variable moderately correlates with the DV).
Please could someone help as to whether I am missing something in terms of putting this into SPSS?