SAS实现SEM分析

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1、SASLibrarySolvingExamplesfromEQSManualUsingProcCalis Example1:ASimpleRegressionModelonpage15 EQScode:manul1.eqsSAScode/TITLESTABILITYOFPOWERLESSNESS(EXAMPLEINEQSMANUALP.15)/SPECIFICATIONSCAS=932;VAR=6;ME=LS;/EQUATIONSV4=1*V2-1*V5+E4;/VARIANCESV2=9*;V5

2、=9*;E4=2*;/COVARIANCESV5,V2=-4*;/MATRIX11.8346.9479.3646.8195.09112.5324.7835.0287.4959.986-3.839-3.889-3.841-3.6259.610-2.189-1.883-2.175-1.8783.5524.503/ENDdatapower(TYPE=COV);_type_='cov';input_name_$v1-v6;datalines;v111.834.....v26.9479.364....v36

3、.8195.09112.532...v44.7835.0287.4959.986..v5-3.839-3.889-3.841-3.6259.610.v6-2.189-1.883-2.175-1.8783.5524.503;run;proccaliscovdata=powermethod=lsnobs=932;LineqsV4=b1v2+b2v5+E4;Stdv2=ev2(9),v5=ev5(9),e4=ee4(2);Covv2v5=Theta(-4);run;Example2:ATwo-Equat

4、ionPathModelonpage22 EQScode:manul2.eqsSAScode/TITLEPATHANALYSISMODEL(EXAMPLEINEQSMANUALP.22)/SPECIFICATIONSCAS=932;VAR=6;ME=ML;/LABELV1=ANOMIE67;V2=POWRLS67;V3=ANOMIE71;V4=POWRLS71;/EQUATIONSV3=1*V1+1*V2+E3;V4=1*V1+1*V2+E4;/VARIANCESV1TOV2=10*;E3TOE4

5、=2*;/COVARIANCESV2,V1=7*;/MATRIX11.8346.9479.3646.8195.09112.5324.7835.0287.4959.986-3.839-3.889-3.841-3.6259.610-2.189-1.883-2.175-1.8783.5524.503/diagramtitle='DiagramfromManul2';orientation=landscape;border=yes;tlocation=bottom;layout=v1bv3e3&v2bv4

6、e4;/end/*********************************************Thisexampleusesthesamecovariancematrixfromtheexampleabove.Thelabelscanbecreatedinadatastepwhichweomittedhere.********************************************/proccaliscovdata=powermethod=mlnobs=932;Line

7、qsv3=a3v1+b3v2+e3,v4=a4v1+b4v2+e4;Stdv1-v2=ev1-ev2,e3-e4=ee3-ee4;Covv1v2=Theta(.7);run;Example3:AFactorAnalysisModelonpage29   EQScode:manul3.eqsSAScode/TITLEFACTORANALYSISMODEL(EXAMPLEINEQSMANUALP.29)/SPECIFICATIONSCAS=932;VAR=6;ME=GLS;/LABELV1=ANOMI

8、A67;V2=POWRLS67;V3=ANOMIA71;V4=POWRLS71;/EQUATIONSV1=2*F1+E1;V2=2*F1+E2;V3=2*F2+E3;V4=2*F2+E4;/VARIANCESF1TOF2=1.0;E1TOE4=3*;/COVARIANCESF2,F1=.3*;e3,e1=*;e4,e2=*;/MATRIX11.8346.9479.3646.8195.09112.5324.7835.0287.4959.986-3.839-3.889-3.841-3.