JASP: DFs for ANCOVA with within-subjects design
I am trying to run an ANCOVA on a within-subjects design. The residual DF reported by JASP is a bit less than the total number of rows in my data (570), whereas I believed that the correct DF should be 54 ( = N - 2 levels of the within subjects factor - 1 covariate).
JASP - is reporting the wrong DF or something other than the DF i need
I am mistaken about the correct DF for this analysis
Something else, e.g. I have mis-specified the analysis in JASP and need to (somehow) include participant as a random effect or something
Here is my analysis:
1 between subjects factor, 'group' with 2 levels;
1 within subjects factor, 'rotation' with 2 levels;
1 covariate, 'angle', which takes 5 values;
Here is the data https://tomstafford.staff.shef.ac.uk/docs/correctrt.csv
Any help much appreciated!