Call:
lm.default(formula = QM ~ (WT1 + WT2 + WT3 + WT4 + WT5 + WT6 +
WT7 + SW1 + SW2 + SW3 + SW4 + SW5 + SW6 + SW7 + SW8)^3, data = zweihochfuenfzehn.withcenterpts)
Residuals:
Min 1Q Median 3Q Max
-3.7816 -0.8627 0.0809 0.9602 2.6832
Coefficients: (214 not defined because of singularities)
Estimate Std. Error t value Pr(>|t|)
(Intercept) 3.052e+02 1.583e+03 0.193 0.84734
WT1 -3.967e+01 4.539e+01 -0.874 0.38347
WT2 -1.033e+01 4.076e+01 -0.254 0.80018
WT3 -5.771e+00 3.728e+01 -0.155 0.87718
WT4 7.490e+00 3.428e+01 0.219 0.82731
WT5 1.605e+01 3.648e+01 0.440 0.66063
WT6 1.909e+01 4.676e+01 0.408 0.68360
WT7 1.176e+01 5.363e+01 0.219 0.82669
SW1 -5.625e+01 2.087e+02 -0.270 0.78790
。。。
。。。
WT2:SW4:SW8 -1.242e-01 2.302e-01 -0.539 0.59037
WT2:SW5:SW6 NA NA NA NA
WT2:SW5:SW7 4.148e-01 2.253e-01 1.841 0.06754 .
WT2:SW5:SW8 NA NA NA NA
WT2:SW6:SW7 -3.239e-02 2.136e-01 -0.152 0.87966
WT2:SW6:SW8 NA NA NA NA
WT2:SW7:SW8 1.179e-01 1.950e-01 0.605 0.54627
WT3:WT4:WT5 8.925e-03 1.448e-02 0.616 0.53866
WT3:WT4:WT6 NA NA NA NA
WT3:WT4:WT7 NA NA NA NA
WT3:WT4:SW1 NA NA NA NA
WT3:WT4:SW2 NA NA NA NA
WT3:WT4:SW3 NA NA NA NA
求大神解答,为什么会出现NA。。。多谢啦


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