设Y=C+aX+bZ,经Eviews 6 运算得
Dependent Variable: Y | | |
Method: Least Squares | | |
Date: 04/13/12 Time: 11:39 | | |
Sample: 1 13 | | | |
Included observations: 13 | | |
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Variable | Coefficient | Std. Error | t-Statistic | Prob. |
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C | 729.3048 | 405.3611 | 1.799148 | 0.1022 |
X | 0.457661 | 0.073449 | 6.231019 | 0.0001 |
Z | -0.051607 | 0.031488 | -1.638936 | 0.1323 |
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R-squared | 0.907529 | Mean dependent var | 1594.462 |
Adjusted R-squared | 0.889035 | S.D. dependent var | 3214.133 |
S.E. of regression | 1070.674 | Akaike info criterion | 16.98914 |
Sum squared resid | 11463425 | Schwarz criterion | 17.11951 |
Log likelihood | -107.4294 | Hannan-Quinn criter. | 16.96234 |
F-statistic | 49.07103 | Durbin-Watson stat | 1.228699 |
Prob(F-statistic) | 0.000007 | | | |
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数据没什么问题,不可能在增加样本了。
F检验合格,T检验不合格,可能是由于多重共线性或异方差,下面多重共线性或异方差该怎么修正?求解详细过程?
坐等:谢谢各位帮忙了!