DW值，是托宾两部分，检验数据是否存在自相关。可以查看DW统计表，进行检验。如果存在自相关，则需要修正，一般采用广义差分法修正。
希望对楼主有帮助

同意楼上

The Durbin-Watson test statistic tests the null hypothesis that the residuals from an ordinary least-squares regression are not autocorrelated against the alternative that the residuals follow an AR1 process.
  
    The Durbin-Watson statistic ranges in value from 0 to 4.
   
     A value near 2 indicates non-autocorrelation; a value toward 0 indicates positive autocorrelation; a value toward 4 indicates negative autocorrelation

不是共线性

谢谢！