spss教程chap主成分分析与因子分析（SPSS tutorial chap ponent analysis and factor analysis）.doc

spss教程chap主成分分析与因子分析（SPSS tutorial chap ponent analysis and factor analysis）.docspss教程_chap13_主成分分析与因子分析(ponentanalysisandfactoranalysis)Thethirteenthchapter,ponentanalysisandfactoranalysisIntroduce:1,ponentanalysisandfactoranalysis2,ponentanalysisandfactoranalysis60%ponentanalysisandfactoranalysisNecessityandpossibility:inscientificresearchinallfields,itisoftennecessarytoreflectthingsAlargenumberofvariablesareobserved,,butalsoinacertainprocessTheamountofdatacollectioneffortisincreased,andmoreimportantly,,theanalysismaybeisolated,,itisnecessarytofindareasonablemethodtoreducetheanalysisindexesatthesametimeReducethelossofinformationcontainedintheoriginalindicator,,,,inthefieldsofmedicine,psychologyandeconomics,%ponentanalysisandfactoranalysis(Continued)Duetothefactthatthemeasuredvariableshavesomecorrelation,Therefore,binationofallkindsofinformationineachvariableIndicatorsarenotrelatedtoeachother,thatis,(extractafewfactors):Eigenvalue>1Cumulativecontributionrate>%ponentanalysis(ponentanalysis):ponents)ExampleP316:dataon5economicvariablesinthe12populationcensusareasofLosangeles,USASubanalysis,data13-01a,data,seethenextslide)Menu::pop,School,employ,Services,houseOtherusesdefaultvalues(ponentanalysis,ponents,selectfeature>1,Nonrotating)Usefulresults: