实例：sas程序 data fLi INPUT TRT X Y@@; CARDS; A4754A5866 an■an C5869C5366 PROC GLM; 输出参数的估值 CLASS TRT; MODEL Y=TRT X/SOLUTION; LSMEANS TRT/STDERR PDIFF; RUN;实例：sas程序 data fL; INPUT TRT $ X Y@@; CARDS; A 47 54 A 58 66 . C 58 69 C 53 66 ; PROC GLM; CLASS TRT; MODEL Y=TRT X/SOLUTION; LSMEANS TRT/STDERR PDIFF; RUN; 输出参数的估值