- , - 2, - , - .
, :
z=list(r~m2+yt, yt~r+inv)
fms=systemfit(z,method="SUR")
summary(fms)
systemfit results
method: SUR
N DF SSR detRCov OLS-R2 McElroy-R2
system 46 40 876932684 1935792727 0.80107 0.957149
N DF SSR MSE RMSE R2 Adj R2
eq1 23 20 3.0322e+03 151.61 12.313 0.68255 0.650807
eq2 23 20 8.7693e+08 43846482.57 6621.668 0.80107 0.781177
The covariance matrix of the residuals used for estimation
eq1 eq2
eq1 141.348 35512.7
eq2 35512.731 38099658.2
The covariance matrix of the residuals
eq1 eq2
eq1 151.61 68642.4
eq2 68642.41 43846482.6
The correlations of the residuals
eq1 eq2
eq1 1.000000 0.841901
eq2 0.841901 1.000000
SUR estimates for 'eq1' (equation 1)
Model Formula: r ~ m2 + yt
Estimate Std. Error t value Pr(>|t|)
(Intercept) 82.200705295 8.978289497 9.1555 1.3653e-08 ***
m2 -0.000223850 0.000202598 -1.1049 0.2823197
yt -0.001036269 0.000317699 -3.2618 0.0039037 **
---
Signif. codes: 0 *** 0.001 ** 0.01 * 0.05 . 0.1 1
Residual standard error: 12.313008 on 20 degrees of freedom
Number of observations: 23 Degrees of Freedom: 20
SSR: 3032.203552 MSE: 151.610178 Root MSE: 12.313008
Multiple R-Squared: 0.682552 Adjusted R-Squared: 0.650807
SUR estimates for 'eq2' (equation 2)
Model Formula: yt ~ r + inv
Estimate Std. Error t value Pr(>|t|)
(Intercept) 50064.399982 3799.527571 13.17648 2.5600e-11 ***
r -495.453785 66.932776 -7.40226 3.7868e-07 ***
inv 1.218453 0.360274 3.38202 0.0029616 **
---
Signif. codes: 0 *** 0.001 ** 0.01 * 0.05 . 0.1 1
Residual standard error: 6621.667658 on 20 degrees of freedom
Number of observations: 23 Degrees of Freedom: 20
SSR: 876929651.445334 MSE: 43846482.572267 Root MSE: 6621.667658
Multiple R-Squared: 0.80107 Adjusted R-Squared: 0.781177
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