what is the correct parameter to use in prod what is the result of a mixed model when is a mixed model used in sas why is the dma signal different from the sas signal is proc mixed statistically significant what signal is mixed in sas what is the signal in mixed in sas what is the difference between a mixed model and sas why sas mixed model what is the value of the signal if sas is mixed? why the signal in sas is different does sas use mixed data what is sas mixed data what is the signal of the mixed model used in sas how to interpret mixed model in sas why i get different results sas and spit can i use proc mixed in sas does proc mixed show covariance what is the correct parameter in glm how to use a mixed model in sas