计量经济学(庞皓)第三版课后答案.docx

第二章 简单线性回归模型 2.1 （1） ①首先分析人均寿命与人均GDP 的数量关系，用Eviews 分析： Dependent Variable: Y Method: Least Squares Date: 12/27/14 Time: 21:00 Sample: 1 22 Included observations: 22 Variable Coefficient Std. Error t-Statistic Prob. C 56.64794 1.960820 28.88992 0.0000 X1 0.128360 0.027242 4.711834 0.0001 R-squared 0.526082 Mean dependent var 62.50000 Adjusted R-squared 0.502386 S.D. dependent var 10.08889 S.E. of regression 7.116881 Akaike info criterion 6.849324 Sum squared resid 1013.000 Schwarz criterion 6.948510 Log likelihood -73.34257 Hannan-Quinn criter. 6.872689 F-statistic 22.20138 Durbin-Watson stat 0.629074 Prob(F-statistic) 0.000134 有上可知，关系式为y=56.64794+0.128360x1 ②关于人均寿命与成人识字率的关系，用Eviews 分析如下： Dependent Variable: Y Method: Least Squares Date: 11/26/14 Time: 21:10 Sample: 1 22 Included observations: 22 Variable Coefficient Std. Error t-Statistic Prob. C 38.79424 3.532079 10.98340 0.0000 X2 0.331971 0.046656 7.115308 0.0000 R-squared 0.716825 Mean dependent var 62.50000 Adjusted R-squared 0.702666 S.D. dependent var 10.08889 S.E. of regression 5.501306 Akaike info criterion 6.334356 Sum squared resid 605.2873 Schwarz criterion 6.433542 Log likelihood -67.67792 Hannan-Quinn criter. 6.357721 F-statistic 50.62761 Durbin-Watson stat 1.846406 Prob(F-statistic) 0.000001 由上可知，关系式为y=38.79424+0.331971x2 ③关于人均寿命与一岁儿童疫苗接种率的关系，用Eviews 分析如下： Dependent Variable: Y Method: Least Squares Date: 11/26/14 Time: 21:14 Sample: 1 22 Included observations: 22 Variable Coefficient Std. Error t-Statistic Prob. C 31.79956 6.536434 4.864971 0.0001 X3 0.387276 0.080260 4.825285 0.0001 R-squared 0.537929 Mean dependent var 62.50000 Adjusted R-squared 0.514825 S.D. dependent var 10.08889 S.E. of regression 7.027364 Akaike info criterion 6.824009 Sum squared resid 987.6770 Schwarz criterion 6.923194 Log likelihood -73.06409 Hannan-Quinn criter. 6.847374 F-statistic