潘省初计量经济学第3版ets3.pptx
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第二章之迟辟智美创作(1)①对浙江省预算收入与全省生产总值的模型,用Eviews分析结果如下:Dependent Variable: YMethod: Least SquaresDate: 12/03/14 Time: 17:00Sample (adjusted): 1 33Included observations: 33 after adjustmentsVariable Coefficient Std. Error t-Statistic Prob.XCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)③关于浙江省财政预算收入与全省生产总值的模型,检验模型的显著性:1)可决系数为0.983702,说明所建模型整体上对样本数据拟合较好.2)对回归系数的t检验:t(β2)=43.25639>t0.025(31)=2.0395,对斜率系数的显著性检验标明,全省生产总值对财政预算总收入有显著影响.④用规范形式写出检验结果如下:(0.004072) (39.08196)t= (43.25639) (-3.948274)R2=0.983702 F=1871.115 n=33⑤经济意义是:全省生产总值每增加1亿元,财政预算总收入增加0.176124亿元.(2)当x=32000时,①进行点预测,由上可知Y=0.176124X—154.3063,代入可得:②进行区间预测:先由Eviews分析:由上表可知,当Xf=32000时,将相关数据代入计算获得:5481.6617—2.0395x175.2325x√1/33+1852223.473/675977068. 2≤即Yf的置信区间为(5481.6617—64.9649,5481.6617+64.9649)(3) 对浙江省预算收入对数与全省生产总值对数的模型,由Eviews分析结果如下:Dependent Variable: LNYMethod: Least SquaresDate: 12/03/14 Time: 18:00Sample (adjusted): 1 33Included observations: 33 after adjustmentsVariable Coefficient Std. Error t-Statistic Prob.LNXCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)③关于浙江省财政预算收入与全省生产总值的模型,检验其显著性:1)可决系数为0.963442,说明所建模型整体上对样本数据拟合较好.2)对回归系数的t检验:t(β2)=28.58268>t0.025(31)=2.0395,对斜率系数的显著性检验标明,全省生产总值对财政预算总收入有显著影响.④经济意义:全省生产总值每增长1%,财政预算总收入增长0.980275%(1)对建筑面积与建造单元本钱模型,用Eviews分析结果如下:Dependent Variable: YMethod: Least SquaresDate: 12/01/14 Time: 12:40Sample: 1 12Included observations: 12Variable Coefficient Std. Error t-Statistic Prob.XCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)由上可得:建筑面积与建造本钱的回归方程为:(2)经济意义:建筑面积每增加1万平方米,建筑单元本钱每平方米减少64.18400元.(3)②再进行区间估计:用Eviews分析:由上表可知,当Xf=4.5时,将相关数据代入计算获得:1556.647—2.228x31.73600x√1/12+43.5357/0.95387843≤即Yf的置信区间为(1556.647—478.1231, 1556.647+478.1231)第三章1)对出口货物总额计量经济模型,用Eviews分析结果如下::Dependent Variable: YMethod: Least SquaresDate: 12/01/14 Time: 20:25Sample: 1994 2011Included observations: 18Variable Coefficient Std. Error t-Statistic Prob.X2X3CR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid8007316. Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)①由上可知,模型为:②对模型进行检验:1)可决系数是0.985838,修正的可决系数为0.983950,说明模型对样本拟合较好2)F检验,F=522.0976>F(2,15)=4.77,回归方程显著3)t检验,t统计量分别为X2的系数对应t值为10.58454,年夜于t(15)=2.131,系数是显著的,X3的系数对应t值为1.928512,小于t(15)=2.131,说明此系数是不显著的.(2)对对数模型,用Eviews分析结果如下:Dependent Variable: LNYMethod: Least SquaresDate: 12/01/14 Time: 20:25Sample: 1994 2011Included observations: 18Variable Coefficient Std. Error t-Statistic Prob.LNX2LNX3CR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)①由上可知,模型为:LNY=-20.52048+1.564221 LNX2+1.760695 LNX3②对模型进行检验:1)可决系数是0.986295,修正的可决系数为0.984467,说明模型对样本拟合较好.2)F检验,F=539.7364> F(2,15)=4.77,回归方程显著.3)t检验,t统计量分别为-3.777363,17.57789,2.581229,均年夜于t(15)=2.131,所以这些系数都是显著的.(3)①(1)式中的经济意义:工业增加1亿元,出口货物总额增加0.135474亿元,人民币汇率增加1,出口货物总额增加18.85348亿元.②(2)式中的经济意义:工业增加额每增加1%,出口货物总额增加1.564221%,人民币汇率每增加1%,出口货物总额增加1.760695%(1)对家庭书刊消费对家庭月平均收入和户主受教育年数计量模型,由Eviews分析结果如下:Dependent Variable: YMethod: Least SquaresDate: 12/01/14 Time: 20:30Sample: 1 18Included observations: 18Variable Coefficient Std. Error t-Statistic Prob.XTCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)②对模型进行检验:1)可决系数是0.951235,修正的可决系数为0.944732,说明模型对样本拟合较好.2)F检验,F=539.7364> F(2,15)=4.77,回归方程显著. 3)t检验,t统计量分别为2.944186,10.06702,均年夜于t (15)=2.131,所以这些系数都是显著的.③经济意义:家庭月平均收入增加1元,家庭书刊年消费支出增加0.086450元,户主受教育年数增加1年,家庭书刊年消费支出增加52.37031元.(2)用Eviews分析:①Dependent Variable: YMethod: Least SquaresDate: 12/01/14 Time: 22:30Sample: 1 18Included observations: 18Variable Coefficient Std. Error t-Statistic Prob.TCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)②Dependent Variable: XMethod: Least SquaresDate: 12/01/14 Time: 22:34Sample: 1 18Included observations: 18Variable Coefficient Std. Error t-Statistic Prob.TCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid4290746. Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)以上分别是y与T,X与T的一元回归模型分别是:(3)对残差进行模型分析,用Eviews分析结果如下:Dependent Variable: E1Method: Least SquaresDate: 12/03/14 Time: 20:39Sample: 1 18Included observations: 18Variable Coefficient Std. Error t-Statistic Prob.E2CR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)模型为:(3)由上可知,β2与α2的系数是一样的.回归系数与被解释变量的残差系数是一样的,它们的变动规律是一致的.第五章(1)由Eviews软件分析得:Dependent Variable: YMethod: Least SquaresDate: 12/10/14 Time: 16:00Sample: 1 31Included observations: 31Variable Coefficient Std. Error t-Statistic Prob.XCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid12220196 Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)由上表可知,2007年我国农村居民家庭人均消费支出(x)对人均纯收入(y)的模型为:(2)①由图形法检验由上图可知,模型可能存在异方差.②Goldfeld-Quanadt检验1)界说区间为1-12时,由软件分析得:Dependent Variable: Y1Method: Least SquaresDate: 12/10/14 Time: 11:34Sample: 1 12Included observations: 12Variable Coefficient Std. Error t-Statistic Prob.X1CR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid1772245. Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)得∑e1i2=1772245.2)界说区间为20-31时,由软件分析得:Dependent Variable: Y1Method: Least SquaresDate: 12/10/14 Time: 16:36Sample: 20 31Included observations: 12Variable Coefficient Std. Error t-Statistic Prob.X1CR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid7909670. Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)得∑e2i2=7909670.3)根据Goldfeld-Quanadt检验,F统计量为:在α=0.05水平下,分子分母的自由度均为10,查分布表得临界值F0.05(10,10)=2.98,因为F=4.4631> F0.05(10,10)=2.98,所以拒绝原假设,此检验标明模型存在异方差.(3)1)采纳WLS法估计过程中,①用权数w1=1/X,建立回归得:Dependent Variable: YMethod: Least SquaresDate: 12/09/14 Time: 11:13Sample: 1 31Included observations: 31Weighting series: W1Variable Coefficient Std. Error t-Statistic Prob.XCWeighted StatisticsR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid8352726. Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)Unweighted StatisticsR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Sum squared resid14484289 Durbin-Watson stat对此模型进行White检验得:Heteroskedasticity Test: WhiteF-statistic Prob. F(2,28)Obs*R-squared Prob. Chi-Square(2)Scaled explained SS Prob. Chi-Square(2)Test Equation:Dependent Variable: WGT_RESID^2Method: Least SquaresDate: 12/10/14 Time: 21:13Sample: 1 31Included observations: 31Collinear test regressors dropped from specificationVariable Coefficient Std. Error t-Statistic Prob.C1045682.WGT^21173622.X*WGT^2R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid 1.40E+13 Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)从上可知,nR2=0.649065,比力计算的统计量的临界值,因为nR2=0.649065<0.05(2)=5.9915,所以接受原假设,该模型消除异方差.估计结果为:t=(11.97157)(-0.972298)②用权数w2=1/x2,用回归分析得:Dependent Variable: YMethod: Least SquaresDate: 12/09/14 Time: 21:08Sample: 1 31Included observations: 31Weighting series: W2Variable Coefficient Std. Error t-Statistic Prob.XCWeighted StatisticsR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid6320554. Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)Unweighted StatisticsR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Sum squared resid19268334Durbin-Watson stat对此模型进行White检验得:Heteroskedasticity Test: WhiteF-statistic Prob. F(3,27)Obs*R-squared Prob. Chi-Square(3)Scaled explained SS Prob. Chi-Square(3)Test Equation:Dependent Variable: WGT_RESID^2Method: Least SquaresDate: 12/10/14 Time: 21:29Sample: 1 31Included observations: 31Variable Coefficient Std. Error t-Statistic Prob.CWGT^22240181.X^2*WGT^2X*WGT^2R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid 5.10E+12 Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)从上可知,nR2=0.999322,比力计算的统计量的临界值,因为nR2=0.999322<0.05(2)=5.9915,所以接受原假设,该模型消除异方差.估计结果为:t=(10.70922)(-1.841272)③用权数w3=1/sqr(x),用回归分析得:Dependent Variable: YMethod: Least SquaresDate: 12/09/14 Time: 21:35Sample: 1 31Included observations: 31Weighting series: W3Variable Coefficient Std. Error t-Statistic Prob.XCWeighted StatisticsR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid9990985. Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)Unweighted StatisticsR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Sum squared resid12717412 Durbin-Watson stat对此模型进行White检验得:Heteroskedasticity Test: WhiteF-statistic Prob. F(2,28)Obs*R-squared Prob. Chi-Square(2)Scaled explained SS Prob. Chi-Square(2)Test Equation:Dependent Variable: WGT_RESID^2Method: Least SquaresDate: 12/09/14 Time: 20:36Sample: 1 31Included observations: 31Collinear test regressors dropped from specificationVariable Coefficient Std. Error t-Statistic Prob.C1212308.2141958.WGT^21301839.X^2*WGT^2R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid 2.17E+13 Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)从上可知,nR2=0.911022,比力计算的统计量的临界值,因为nR2=0.911022<0.05(2)=5.9915,所以接受原假设,该模型消除异方差.估计结果为:t=(13.52507)(-0.151390)经过检验发现,用权数w1的效果最好,所以综上可知,即修改后的结果为:t=(11.97157)(-0.972298)第六章(1)建立居民收入-消费模型,用Eviews分析结果如下:Dependent Variable: YMethod: Least SquaresDate: 12/20/14 Time: 14:22Sample: 1 19Included observations: 19Variable Coefficient Std. Error t-Statistic Prob.XCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)所得模型为:Se=(0.012877)(12.39919)t=(53.62068)(6.446390)(2)1)检验模型中存在的问题①做出残差图如下:残差的变动有系统模式,连续为正和连续为负,标明残差项存在一阶自相关.②该回归方程可决系数较高,回归系数均显著.对样本量为19,一个解释变量的模型,5%的显著水平,查DW统计表可知,dL=1.180,dU=1.401,模型中DW=0.574663,<dL,显然模型中有自相关.③对模型进行BG检验,用Eviews分析结果如下:Breusch-Godfrey Serial Correlation LM Test:F-statistic Prob. F(2,15)Obs*R-squared Prob. Chi-Square(2)Test Equation:Dependent Variable: RESIDMethod: Least SquaresDate: 12/20/14 Time: 15:03Sample: 1 19Included observations: 19Presample missing value lagged residuals set to zero.Variable Coefficient Std. Error t-Statistic Prob.XCRESID(-1)RESID(-2)R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)如上表显示,LM=TR2=7.425088,其p值为0.0244,标明存在自相关.2)对模型进行处置:①采用广义差分法a)为估计自相关系数ρ.对et进行滞后一期的自回归,用EViews分析结果如下:Dependent Variable: EMethod: Least SquaresDate: 12/20/14 Time: 15:04Sample (adjusted): 2 19Included observations: 18 after adjustmentsVariable Coefficient Std. Error t-Statistic Prob.E(-1)R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.Durbin-Watson statb)对原模型进行广义差分回归,用Eviews进行分析所得结果如下:Dependent Variable: Y-0.657352*Y(-1)Method: Least SquaresDate: 12/20/14 Time: 15:04Sample (adjusted): 2 19Included observations: 18 after adjustmentsVariable Coefficient Std. Error t-Statistic Prob.CX-0.657352*X(-1)R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)由上图可知回归方程为:Yt*=35.97761+0.668695Xt*Se=(8.103546)(0.020642)t=(4.439737)(32.39512)由于使用了广义差分数据,样本容量减少了1个,为18个.查5%显著水平的DW统计表可知,dL=1.158,dU=1.391模型中DW=1,830746,du<DW<4- dU,说明在5%的显著水平下广义差分模型中已无自相关.可决系数R2,t,F统计量也均到达理想水平.由此最终的消费模型为:Yt=104.9987+0.668695Xt②用科克伦-奥克特迭代法,用EVIews分析结果如下:Dependent Variable: YMethod: Least SquaresDate: 12/20/14 Time: 15:15Sample (adjusted): 2 19Included observations: 18 after adjustmentsConvergence achieved after 5 iterationsVariable Coefficient Std. Error t-Statistic Prob.CXAR(1)R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)Inverted AR Roots .63所得方程为:(3)经济意义:人均实际收入每增加1元,平均说来人均时间消费支出将增加0.669262元.(1)针对对数模型,用Eviews分析结果如下:Dependent Variable: LNYMethod: Least SquaresDate: 12/27/14 Time: 16:13Sample: 1980 2000Included observations: 21Variable Coefficient Std. Error t-Statistic Prob.LNXCR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)所得模型为:se=(0.038897) (0.241025)t=(24.45123) (9.007529)2)检验模型的自相关性该回归方程可决系数较高,回归系数均显著.对样本量为21,一个解释变量的模型,5%的显著水平,查DW统计表可知,dL=1.221,dU=1.420,模型中DW=1.159788<dL,显然模型中有自相关.(2)用广义差分法处置模型:1)为估计自相关系数ρ.对et进行滞后一期的自回归,用EViews分析结果如下:Dependent Variable: EMethod: Least SquaresDate: 12/27/14 Time: 16:18Sample (adjusted): 1982 2000Included observations: 19 after adjustmentsVariable Coefficient Std. Error t-Statistic Prob.E(-1)R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid2848090. Schwarz criterionLog likelihood Hannan-Quinn criter.Durbin-Watson stat2)对原模型进行广义差分回归,用Eviews进行分析所得结果如下:Dependent Variable: Y+0.012872*Y(-1)Method: Least SquaresDate: 12/27/14 Time: 21:06Sample (adjusted): 1981 2000Included observations: 20 after adjustmentsVariable Coefficient Std. Error t-Statistic Prob.CX+0.012872*X(-1)R-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid2882022. Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)由上图可知回归方程为:Yt*=-104.9645+6.653757Xt*Se=(197.7928)( 0.304157)t=(-0.530679)( 21.87605)由于使用了广义差分数据,样本容量减少了1个,为20个.查5%显著水平的DW统计表可知,dL=1.201,dU=1.411模型中DW=1.8222596,du<DW<4- dU,说明在5%的显著水平下广义差分模型中已无自相关.可决系数R2,t,F统计量也均到达理想水平.由此最终的模型为:(3)对此模型,用Eviews分析结果如下:Dependent Variable: LNY1Method: Least SquaresDate: 12/27/14 Time: 22:16Sample (adjusted): 1981 2000Included observations: 20 after adjustmentsVariable Coefficient Std. Error t-Statistic Prob.LNX1CR-squared Mean dependent varAdjusted R-squared S.D. dependent varS.E. of regression Akaike info criterionSum squared resid Schwarz criterionLog likelihood Hannan-Quinn criter.F-statistic Durbin-Watson statProb(F-statistic)由题目可知,此模型样本容量为20,查5%显著水平的DW 统计表可知,dL=1.201,dU=1.411模型中DW=1.590363,du<DW<4- dU,说明在5%的显著水平此模型中无自相关.可决系数R2,t,F统计量也均到达理想水平。