Null Hypothesis: D(LGDP1,2) has a unit root
Exogenous: Constant, Linear Trend
Lag Length: 0 (Automatic based on SIC, MAXLAG=7) (这句是什么意思??)
t-Statistic Prob.*
Augmented Dickey-Fuller test statistic -5.605553 0.0005
Test critical values: 1% level -4.339330
5% level -3.587527
10% level -3.229230
*MacKinnon (1996) one-sided p-values.
Augmented Dickey-Fuller Test Equation
Dependent Variable: D(LGDP1,3) 不是滞后两期吗 怎么这里变成了D(LGDP1,3)?
Method: Least Squares
Date: 11/16/09 Time: 23:11
Sample (adjusted): 1981 2007
Included observations: 27 after adjustments
Variable Coefficient Std. Error t-Statistic Prob.
D(LGDP1(-1),2) -1.091960 0.194800 -5.605553 0.0000
C 0.002146 0.016771 0.127976 0.8992
@TREND(1978) -8.13E-05 0.000941 -0.086407 0.9319
R-squared 0.567517 Mean dependent var 0.003781
Adjusted R-squared 0.531477 S.D. dependent var 0.055623
S.E. of regression 0.038073 Akaike info criterion -3.594180
Sum squared resid 0.034789 Schwarz criterion -3.450198
Log likelihood 51.52143 F-statistic 15.74677
Durbin-Watson stat 1.951577 Prob(F-statistic) 0.000043
很想弄清黑体部分的意思,劳烦各位大虾了~~~
还有,在确定了解释变量和因变量都是二阶平稳的时候,做协整分析确定长期关系时,是用两变量的原值,还是平稳时候的二阶值?


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