大概你的版本比较低吧。我的2014a.
无交叉项
Linear regression model:
y ~ 1 + x1 + x2 + x3 + x4
Estimated Coefficients:
Estimate SE tStat pValue
___________ __________ _______ ________
(Intercept) 4.1687e-06 1.669e-06 2.4977 0.046673
x1 7.7556e-07 6.1331e-07 1.2646 0.25293
x2 -6.8289e-07 2.0906e-07 -3.2664 0.017111
x3 -4.6386e-06 2.0203e-06 -2.296 0.061435
x4 2.9402e-08 1.5293e-08 1.9225 0.1029
Number of observations: 11, Error degrees of freedom: 6
Root Mean Squared Error: 5.12e-07
R-squared: 0.86, Adjusted R-Squared 0.766
F-statistic vs. constant model: 9.18, p-value = 0.00991
前11项的回归结果,你的y太小了,有交叉项似乎意义不大。