D1. Check covariate model (continued)
Three examples of covariate output are provided here. They differ in the number of treatment factors. Choose single if you only have one treatment factor, double if you have two (factorial, split-plot, strip-plot, repeated measures), and triple if you have a split-split-plot.
For example, the standard analysis:
If all tests are non-significant, then the standard covariate model is appropriate, and you can go back to Step D.
|H I N T S :|
|Remember, data transformations can fix apparent outliers.|
| Do not be concerned if you have to rerun your SAS analysis many times. Correction of diagnostics may take
|To see an example using two covariates, see the Examples resource.|