我进行了回归分析,
Source | SS df MS Number of obs = 59
-------------+------------------------------ F( 6, 52) = 6.06
Model | .021818075 6 .003636346 Prob > F = 0.0001
Residual | .031203833 52 .000600074 R-squared = 0.4115
-------------+------------------------------ Adj R-squared = 0.3436
Total | .053021907 58 .000914171 Root MSE = .0245
------------------------------------------------------------------------------
ROE | Coef. Std. Err. t P>|t| [95% Conf. Interval]
-------------+----------------------------------------------------------------
LEV | -.0303372 .033601 -0.90 0.371 -.0977625 .0370881
SSP | .0693262 .0314949 2.20 0.032 .006127 .1325253
CSP | .0202609 .0301242 0.67 0.504 -.0401878 .0807096
LH | -.0042244 .0303913 -0.14 0.890 -.065209 .0567603
grow | .059987 .0127388 4.71 0.000 .0344246 .0855493
liqu | -.0313489 .0418135 -0.75 0.457 -.1152538 .052556
_cons | .0663309 .0173971 3.81 0.000 .0314211 .1012407
------------------------------------------------------------------------------
并进行了异方差检验,结果是这样:
. hettest
Breusch-Pagan / Cook-Weisberg test for heteroskedasticity
Ho: Constant variance
Variables: fitted values of ROE
chi2(1) = 10.90
Prob > chi2 = 0.0010
别人说存在异方差,怎么看出来的?存在异方差,那怎么消除呢。
多重共线性也检验了,结果是这样:
. vif
Variable | VIF 1/VIF
-------------+----------------------
LEV | 1.58 0.634768
liqu | 1.56 0.639678
grow | 1.33 0.751801
CSP | 1.19 0.842417
LH | 1.14 0.874456
SSP | 1.05 0.953734
-------------+----------------------
Mean VIF | 1.31
这个结果对否存在共线性,怎么看?
求高手解答呀~论文需要,急求!!!!!谢谢啦~