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計量經(jīng)濟(jì)學(xué)龐皓第三版課后答案-文庫吧資料

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【正文】 CRsquaredDurbinWatson statProb(Fstatistic)得∑e1i2=2)定義區(qū)間為1218時,由軟件分析得:Dependent Variable: YMethod: Least SquaresDate: 12/10/14 Time: 13:50Sample: 12 18Included observations: 7VariableCoefficientStd. ErrortStatisticProb.HannanQuinn criter.FstatisticSchwarz criterionLog likelihoodAkaike info criterionSum squared resid. dependent var. of regressionMean dependent varAdjusted RsquaredTXCRsquared(1)①用圖形法檢驗繪制e2的散點圖,用Eviews分析如下:由上圖可知,模型可能存在異方差,② GoldfeldQuanadt檢驗1)定義區(qū)間為17時,由軟件分析得:Dependent Variable: YMethod: Least SquaresDate: 12/10/14 Time: 14:52Sample: 1 7Included observations: 7VariableCoefficientStd. ErrortStatisticProb.并且通過以上分析,兩兩被解釋變量之間相關(guān)性都很高。由上表可知,CZZC與GDP,CZZC與SSZE,GDP與SSZE之間的相關(guān)系數(shù)都非常高,說明確實存在多重共線性。SSZEGDPCZZC(2)得到相關(guān)系數(shù)矩陣如下:CZSRCZZCGDPSSZECZSR但是t檢驗結(jié)果表明,國內(nèi)生產(chǎn)總值對財政收入的影響顯著,但回歸系數(shù)的符號為負(fù),與實際不符合。DurbinWatson statProb(Fstatistic)從回歸結(jié)果可見,模型擬合的很好。HannanQuinn criter.FstatisticSchwarz criterionLog likelihoodAkaike info criterionSum squared resid2866884.. dependent var. of regressionMean dependent varAdjusted RsquaredCZZCGDPSSZECRsquared(1)按照設(shè)計的理論模型,由Eviews分析得:Dependent Variable: CZSRMethod: Least SquaresDate: 12/03/14 Time: 11:40Sample: 1985 2011Included observations: 27VariableCoefficientStd. ErrortStatisticProb.DurbinWatson statProb(Fstatistic)①得到的回歸方程分別為1)LNY= 2)LNY= 3)LNGDPt= ②對多重共線性的認(rèn)識:單方程擬合效果都很好,回歸系數(shù)顯著,判定系數(shù)較高,GDP和CPI對進(jìn)口的顯著的單一影響,在這兩個變量同時引入模型時影響方向發(fā)生了改變,這只有通過相關(guān)系數(shù)的分析才能發(fā)現(xiàn)。HannanQuinn criter.FstatisticSchwarz criterionLog likelihoodAkaike info criterionSum squared resid. dependent var. of regressionMean dependent varAdjusted RsquaredLNCPICRsquaredDurbinWatson statProb(Fstatistic)c)Dependent Variable: LNGDPMethod: Least SquaresDate: 12/05/14 Time: 11:11Sample: 1985 2011Included observations: 27VariableCoefficientStd. ErrortStatisticProb.HannanQuinn criter.FstatisticSchwarz criterionLog likelihoodAkaike info criterionSum squared resid. dependent var. of regressionMean dependent varAdjusted RsquaredLNCPICRsquaredDurbinWatson statProb(Fstatistic)b)Dependent Variable: LNYMethod: Least SquaresDate: 12/03/14 Time: 14:41Sample: 1985 2011Included observations: 27VariableCoefficientStd. ErrortStatisticProb.HannanQuinn criter.FstatisticSchwarz criterionLog likelihoodAkaike info criterionSum squared resid. dependent var. of regressionMean dependent varAdjusted RsquaredLNGDPCRsquared(3)由Eviews得:a)Dependent Variable: LNYMethod: Least SquaresDate: 12/03/14 Time: 14:41Sample: 1985 2011Included observations: 27VariableCoefficientStd. ErrortStatisticProb.LNCPI②得到相關(guān)系數(shù)矩陣如下:LNYLNGDPLNCPILNYDurbinWatson statProb(Fstatistic)得到的模型方程為:LNY= (2)① ,可決系數(shù)很高,明顯顯著。HannanQuinn criter.FstatisticSchwarz criterionLog likelihoodAkaike info criterionSum squared resid. dependent var. of regressionMean dependent varAdjusted RsquaredLNGDPLNCPICRsquared(1)根據(jù)Eviews分析得到數(shù)據(jù)如下:Dependent Variable: LNYMethod: Least SquaresDate: 12/05/14 Time: 11:39Sample: 1985 2011Included observations: 27VariableCoefficientStd. ErrortStatisticProb.2) F檢驗,F(xiàn)=F()=3,89,回歸方程顯著3) T檢驗,X5 ,大于t(12)=,所以系數(shù)是顯著的,即人均GDP對年底存款余額有顯著影響。2) F檢驗,F(xiàn)=F()=3,89,回歸方程顯著3) T檢驗,X1,X2,X3,X4,X5,X6 系數(shù)對應(yīng)的t值分別為:,均小于t(12)=,所以所得系數(shù)都是不顯著的。DurbinWatson statProb(Fstatistic)①與預(yù)期不相符。HannanQuinn criter.FstatisticSchwarz criterionLog likelihoodAkaike info criterionSum squared resid. dependent var. of regressionMean dependent varAdjusted RsquaredX2X3X4X5X6CRsquared(1)預(yù)期的符號是X1,X2,X3,X4,X5的符號為正,X6的符號為負(fù)(2)根據(jù)Eviews分析得到數(shù)據(jù)如下:Dependent Variable: YMethod: Least SquaresDate: 12/04/14 Time: 13:24Sample: 1994 2011Included observations: 18VariableCoefficientStd. ErrortStatisticProb.DurbinWatson statProb(Fstatistic)模型為:E1 = + 參數(shù):,(3)由上可知,β2與α2的系數(shù)是一樣的。HannanQuinn criter.FstatisticSchwarz criterionLog likelihoodAkaike info c
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