似不相关回归结果中为什么有一个变量的回归结果直接中系数为0 标准差显示omiteed [推广有奖]

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lys23137 发表于 2016-4-12 10:30:36 |AI写论文

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似不相关回归结果中为什么有一个变量的回归结果直接中系数为0 标准差显示omiteed？？

Seemingly unrelated regression
----------------------------------------------------------------------
Equation       Obs  Parms       RMSE "R-sq"    chi2       P
----------------------------------------------------------------------
lnc             426    13 .0184799 0.9998 1.86e+06 0.0000
----------------------------------------------------------------------

------------------------------------------------------------------------------
      lnc |    Coef. Std. Err.    z P>|z|    [95% Conf. Interval]
-------------+----------------------------------------------------------------
lnc       |
      lnl | .5098435 .1789168    2.85 0.004    .159173 .8605139
      lnd | .3203482 .1818621    1.76 0.078 -.0360949 .6767914
      lnl2 | .0098985 .0038102    2.60 0.009    .0024306 .0173663
      lnd2 |  -.0066708 .0039546 -1.69 0.092 -.0144217 .0010801
      lnwh |  -.0596145 .0764493 -0.78 0.436 -.2094522 .0902233
      lnwm | .5343558 .0976827    5.47 0.000    .3429012 .7258103
   lnwh2 | .0391733 .000742 52.80 0.000    .0377191 .0406276
   lnwm2 | .1210208 .0076156 15.89 0.000    .1060945 .1359471
   lnwhlnl | .1366638 .0266544    5.13 0.000    .0844221 .1889055
   lnwhlnd |  -.1409654 .0264843 -5.32 0.000 -.1928737 -.0890571
   lnllnwm | .0325136 .0280688    1.16 0.247 -.0225002 .0875274
   lndlnwm |  -.0255971 .0286814 -0.89 0.372 -.0818116 .0306174
lnwhlnwm |  -.2023124 .0093513 -21.63 0.000 -.2206407 -.1839841
   var17 |       0  (omitted)
   _cons | 1.848119 .5890299    3.14 0.002    .6936418 3.002597
------------------------------------------------------------------------------

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