[统计软件] stata 多元回归哑变量 [推广有奖]

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15010485131 发表于 2017-5-30 02:03:00 |AI写论文

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多元回归中有哑变量，命令：reg lnfee Imp_dum  Roe lev invrec size top10 opinion loss  if Gw2==1
出现结果：
reg lnfee Imp_dum  Roe lev invrec size top10 opinion loss  if Gw1==1
note: Imp_dum omitted because of collinearity
note: opinion omitted because of collinearity

   Source |    SS    df    MS             Number of obs = 12131
-------------+------------------------------          F(  6, 12124) = 1942.88
   Model |  2314.46824    6  385.744707          Prob > F    =  0.0000
Residual |  2407.13394 12124  .198542885          R-squared    =  0.4902
-------------+------------------------------          Adj R-squared =  0.4899
   Total |  4721.60218 12130  .389249974          Root MSE    =  .44558

------------------------------------------------------------------------------
   lnfee |    Coef. Std. Err.    t P>|t|    [95% Conf. Interval]
-------------+----------------------------------------------------------------
   Imp_dum |       0  (omitted)
      Roe | .0011596 .0004102    2.83 0.005    .0003555 .0019636
      lev | .0163828 .0008296 19.75 0.000    .0147567 .0180089
   invrec |  -.0625919 .0229171 -2.73 0.006 -.1075131 -.0176707
      size | .339603 .0033195 102.31 0.000    .3330963 .3461097
   top10 | .2162638 .0081672 26.48 0.000    .2002548 .2322727
   opinion |       0  (omitted)
      loss | .0983037 .0125747    7.82 0.000    .0736553 .1229522
   _cons | 5.874396 .0717503 81.87 0.000    5.733754 6.015038
------------------------------------------------------------------------------

急求解决方案，能让上表为0的两个哑变量能回归！！！！