I recently was asked whether to report means from descriptive statistics or from the Estimated Marginal Means with SPSS GLM.
The Estimated Marginal Means in SPSS GLM tell you the mean response for each factor, adjusted for any other variables in the model. They are found in the Options button. (These are the same as the LSMeans in SAS GLM).
If all factors (aka categorical predictors) were manipulated, these factors should be independent.
Or at least they will be if you randomly assigned subjects to conditions well.
In this situation only, the estimated marginal means will be the same as the [Read more…] about Why report estimated marginal means in SPSS GLM?