Perfect Multicollinearity检测方法是有两种吗?t-test indicate that none of the individual coefficient is signifacantly different than zero, while the F-test indicates overall significance and the R2 (R方) is high. 这种情形是 Perfect Multicollinearity还是 imerfect Multicollinearity? 如果 相关系数大于0.7则认为是 Perfect Multicollinearity,若相关系数<0.7,但是>0,则认为是 imerfect Multicollinearity,对吗? |
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