多元回归的三次 二次结果比较:
三次的P值没有全部通过5%,全部通过10% 二次的全部通过5%
三次的R平方 校正R平方都略大于二次的
三次的F统计量小于二次的
请问哪个模型更优?如何进行选择?谢谢!
输出结果如下:
三次
Coefficient Std.Error t-Statistic Prob.
NX1 81.95366 35.42000 2.313768 0.0432
NX2 -8.267937 3.709882 -2.228625 0.0500
NX3 0.280147 0.129334 2.166069 0.0555
C -271.0507 112.5579 -2.408099 0.0368
R-squared 0.991514 Mean dependent var 1.478976
Adjusted R-squared 0.988968 S.D. dependent var 0.449990
S.E. of regression 0.047263 Akaike info criterion -3.031211
Sum squared resid 0.022338 Schwarz criterion -2.848624
Log likelihood 25.21848 Hannan-Quinn criter. -3.048113
F-statistic 389.4755 Durbin-Watson stat 1.328357
Prob(F-statistic) 0.000000
二次
Coefficient Std. Error t-Statistic Prob.
NX1 5.266065 1.228668 4.285995 0.0013
NX2 -0.232981 0.064287 -3.624091 0.0040
C -27.48962 5.855947 -4.694308 0.0007
R-squared 0.987533 Mean dependent var 1.478976
Adjusted R-squared 0.985266 S.D. dependent var 0.449990
S.E. of regression 0.054622 Akaike info criterion -2.789360
Sum squared resid 0.032819 Schwarz criterion -2.652420
Log likelihood 22.52552 Hannan-Quinn criter. -2.802037
F-statistic 435.6524 Durbin-Watson stat 0.993612
Prob(F-statistic) 0.000000