I am currently trying to analyze the differences between three measurement machines. Every time I attempt to run the code I get an error message saying the statement is out of  proper order or not valid. Machine is the fixed effect and Rep is the random effect. Here is the code I am currently using. Any assistance would be appreciated.   Proc GLM data= robertU4L; Class Machine Rep; Model TW = Machine Rep; Fixed= Machine; Random= Rep; means machine/lsd; Run; ... View more