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1、计量经济学 系别:国贸系 班级:08商行一班 姓名:王善勇 学号:2008018149一、数据变换create a 1985 2003data Cr Cu Yr Yu Rpop Pop P Pr Pu人均消费:genr C1=(Cr* Rpop/100+Cu* (1-Rpop/100)/P*100人均可支配收入:genr Y1=(Yr* Rpop/100+Yu* (1-Rpop/100)/P*100农村人均消费:genr Cr1= Cr /Pr*100城镇人均消费:genr Cu1= Cu /Pu*100农村人均纯收入:genr Yr1= Yr /Pr*100城镇人均可支配收入:genr Yu
2、1= Yu /Pu*100二、图形分析全国消费情况分析:scat Y1 C1从图形中看出Y1和C1大致线形关系,即人均可支配收入和人均消费大致呈线形关系。农村消费情况分析:scat Yr1 Cr1 从图中可以看出YR1和CR1大致符合线形关系,所以农村人均纯收入和农村人均消费大致呈线形关系城镇消费情况分析:scat Yu1 Cu1从图中可以看出YU1和CU1大致呈线形关系,即城镇人均可支配收入和城镇人均消费大致呈线形关系。三、估计线性回归模型全国消费情况分析:ls C1 Cy1Dependent Variable: C1Method: Least SquaresDate: 04/07/11 T
3、ime: 0:08Sample: 1985 2003Included observations: 19VariableCoefficientStd. Errort-StatisticProb.C91.178668.11259711.239150.0000Y10.6918380.00945173.200450.0000R-squared0.996837Mean dependent var648.0065Adjusted R-squared0.996651S.D. dependent var212.3784S.E. of regression12.28981Akaike info criterio
4、n7.954718Sum squared resid2567.669Schwarz criterion8.054133Log likelihood-73.56982F-statistic5358.306Durbin-Watson stat1.146184Prob(F-statistic)0.000000农村消费情况分析:ls Cr1 C Yr1 Dependent Variable: CR1Method: Least SquaresDate: 04/07/11 Time: 0:10Sample: 1985 2003Included observations: 19VariableCoeffic
5、ientStd. Errort-StatisticProb.C106.872612.371698.6384790.0000YR10.5999790.02166627.692750.0000R-squared0.978313Mean dependent var437.6700Adjusted R-squared0.977038S.D. dependent var92.62741S.E. of regression14.03617Akaike info criterion8.220453Sum squared resid3349.239Schwarz criterion8.319867Log li
6、kelihood-76.09430F-statistic766.8886Durbin-Watson stat0.741189Prob(F-statistic)0.000000城镇消费情况分析:ls Cu1 C Yu1Dependent Variable: CU1Method: Least SquaresDate:04/07/11 Time: 0:16Sample: 1985 2003Included observations: 19VariableCoefficientStd. Errort-StatisticProb.C149.203910.8516213.749460.0000YU10.7
7、049240.00773691.125660.0000R-squared0.997957Mean dependent var1081.224Adjusted R-squared0.997837S.D. dependent var339.8339S.E. of regression15.80586Akaike info criterion8.457939Sum squared resid4247.028Schwarz criterion8.557354Log likelihood-78.35042F-statistic8303.886Durbin-Watson stat2.018618Prob(F-statistic)0.000000四、回归结果 全国:农村: 城镇: 分析:一。从回归结果来看,三个方程的都很高,说明人均可支配收入较好地解释了人均消费支出。 二三个消费模型中,可支配收入对人均消费的影响是显著的,并且都大于0小于1.符合经济理论。三。斜率系数最大的是城镇的斜率系数,其次是全国平均的斜率,最小的是农村的斜率。说明城镇居民的边际消费倾向要高于农村居民。