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ID:51442496
大小:3.13 MB
页数:18页
时间:2020-03-22
《当代市场调研10E全套配套课件中英文PPTch17.ppt》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、ChapterSeventeen17-1BivariateAnalysisofAssociationBivariateTechniques:Statisticalmethodsofanalyzingtherelationshipbetweentwovariables.IndependentVariable:Variablebelievedtoaffectthevalueofthedependentvariable.17-2KeyTerms&DefinitionsDependentVariable:Variableexpectedtobeexp
2、lainedorcausedbytheindependentvariable.BivariateRegressionAnalysis:Theanalysisofthestrengthofthelinearrelationshipbetweenvariableswhenoneisconsideredtheindependentvariableandtheotheristhedependentvariable.BivariateAnalysisofAssociation17-3KeyTerms&DefinitionsScatterDiagramS
3、catterDiagram:GraphicplotofthedatawithdependentvariableontheY(vertical)axisandtheindependentvariableontheX(horizontal)axis.Showsthenatureoftherelationshipbetweenthetwovariables,linearornonlinear.17-4KeyTerms&DefinitionsTypesofRelationshipsFoundinScatterDiagrams17-5KeyTerms&
4、DefinitionsTypesofRelationshipsFoundinScatterDiagrams17-6KeyTerms&DefinitionsValuesfor“a”and“b”canbecalculatedasfollows:Least-SquaresEstimationProcedure17-7KeyTerms&DefinitionsLeast-SquaresEstimationProcedureTheleast-squaresprocedureisafairlysimplemathematicaltechniquethatc
5、anbeusedtofitdataforXandYtoalinethatbestrepresentstherelationshipbetweenthetwovariables.17-8KeyTerms&DefinitionsLeast-SquaresEstimationProcedureTheleast-squaresprocedureisafairlysimplemathematicaltechniquethatcanbeusedtofitdataforXandYtoalinethatbestrepresentstherelationshi
6、pbetweenthetwovariables.17-9KeyTerms&DefinitionsCoefficientofDetermination17-10KeyTerms&DefinitionsCoefficientofDetermination17-11KeyTerms&DefinitionsCoefficientofDetermination17-12KeyTerms&DefinitionsStatisticalSignificanceofRegressionResults17-13KeyTerms&DefinitionsStatis
7、ticalSignificanceofRegressionResults17-14KeyTerms&DefinitionsErrorSumsofSquares(SSE)SumofSquaresDuetoRegressionVariationnotexplainedbytheregression.Instudyingtherelationshipbetweenvehiculartrafficandsales,thecoefficientofdeterminationmaybeusedtomeasurethepercentofthetotalva
8、riation.17-15KeyTerms&DefinitionsHypothesesConcerningOverallRegressionHerewe,asthe
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