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不平稳,Null Hypothesis: GDP has a unit root
Exogenous: None
Lag Length: 5 (Automatic - based on SIC, maxlag=5)
t-Statistic Prob.*
Augmented Dickey-Fuller test statistic -0.898811 0.3257
Test critical values: 1% level -2.576875
5% level -1.942465
10% level -1.615617
*MacKinnon (1996) one-sided p-values.
Augmented Dickey-Fuller Test Equation
Dependent Variable: D(GDP)
Method: Least Squares
Date: 11/03/14 Time: 08:05
Sample (adjusted): 1820 2014
Included observations: 195 after adjustments
Variable Coefficient Std. Error t-Statistic Prob.
GDP(-1) -0.032452 0.036105 -0.898811 0.3699
D(GDP(-1)) -0.960852 0.076001 -12.64268 0.0000
D(GDP(-2)) -0.875998 0.095726 -9.151122 0.0000
D(GDP(-3)) -0.711848 0.101401 -7.020153 0.0000
D(GDP(-4)) -0.516260 0.093048 -5.548314 0.0000
D(GDP(-5)) -0.282935 0.069708 -4.058877 0.0001
R-squared 0.517734 Mean dependent var -0.015385
Adjusted R-squared 0.504976 S.D. dependent var 4.336939
S.E. of regression 3.051382 Akaike info criterion 5.099352
Sum squared resid 1759.767 Schwarz criterion 5.200060
Log likelihood -491.1869 Hannan-Quinn criter. 5.140128
Durbin-Watson stat 2.060157
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