案例+第7章+多元回归分析.doc

文档介绍：案例第7章多元回归分析Chapter13Instructor'sManualChapter13MultipleRegressionCaseProblem1:.:+-**AMOUNT-2*-****-*****4500+**-**********-****-*****-**3000+*******-**-***--*1500+-----+---------+---------+---------+---------+---------+--E203040506070IM-28Chapter13Instructor'sManual6000+-2AMOUNT-***-4-**2*4500+**-332**-2**-*3*-23000+24*-2-*2--*1500+---+---------+---------+---------+---------+---------+--:回归方程为年信用卡支付额=2204+-=-sq=%R-sq(adj)=%=2582+404SIZEPredictorCoefStdevt-=-sq=%R-sq(adj)=%-29Chapter13Instructor'sManual若只用一个因变量,家庭成员数这个变量能更好地预测年信用卡支付额Usingonlyoneindependentvariable,:TheregressionequationisAMOUNT=1305++356家庭成员数PredictorCoefStdevt-=-sq=%R-sq(adj)=%AnalysisofVarianceSOURCEDFSSMSFpRegression235250756**********.=1305+(40)+356(3)=$3697CaseProblem2:%.%%