Editing Analysis of covariance (section)

===Run ANCOVA analysis===
If the CV×IV interaction is not significant, rerun the ANCOVA without the CV×IV interaction term.  
In this analysis, you need to use the adjusted means and adjusted [[mean squared error]]. The adjusted means (also referred to as least squares means, LS means, estimated marginal means, or EMM) refer to the group means after controlling for the influence of the CV on the DV.
[[File:Main Effects.jpg|thumb|Simple main effects plot showing a small Interaction between the two levels of the independent variable.]]