Null Hypothesis: D(SQUS) has a unit root
Exogenous: Constant
Lag Length: 3 (Automatic based on SIC, MAXLAG=4)
t-Statistic Prob.*
Augmented Dickey-Fuller test statistic -1.579607 0.4708
Test critical values:
1% level -3.886751
5% level -3.052169
10% level -2.666593
*MacKinnon (1996) one-sided p-values.
Warning: Probabilities and critical values calculated for 20 observations
and may not be accurate for a sample size of 17
Augmented Dickey-Fuller Test Equation
Dependent Variable: D(SQUS,2)
Method: Least Squares
Date: 06/06/10 Time: 11:53
Sample (adjusted): 2001S2 2009S2
Included observations: 17 after adjustments
Variable Coefficient Std. Error t-Statistic Prob.
D(SQUS(-1)) -1.764424 1.117002 -1.579607 0.1402
D(SQUS(-1),2) 0.137951 0.961073 0.143539 0.8882
D(SQUS(-2),2) -0.528282 0.813158 -0.649667 0.5281
D(SQUS(-3),2) -0.893911 0.446451 -2.002259 0.0684
C 4535.032 3149.120 1.440095 0.1754
R-squared 0.993086 Mean dependent var 4203.648
Adjusted R-squared 0.990781 S.D. dependent var 65401.46
S.E. of regression 6279.664 Akaike info criterion 20.56795
Sum squared resid 4.73E+08 Schwarz criterion 20.81301
Log likelihood -169.8276 Hannan-Quinn criter. 20.59231
F-statistic 430.8725 Durbin-Watson stat 2.068597
Prob(F-statistic) 0.000000
其中
Test critical values:
1% level -3.886751
5% level -3.052169
10% level -2.666593
那么请问要拿那个东西与这几个临界值比较呢,是t 统计量吗,但他们几个都在非拒绝域中,就说明有单根,然后继续做一阶、两阶对把?
Variable Coefficient Std. Error
t-Statistic Prob.
D(SQUS(-1)) -1.764424 1.117002
-1.579607 0.1402
D(SQUS(-1),2) 0.137951 0.961073 0.143539 0.8882
D(SQUS(-2),2) -0.528282 0.813158 -0.649667 0.5281
D(SQUS(-3),2) -0.893911 0.446451 -2.002259 0.0684
C 4535.032 3149.120 1.440095 0.1754
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本文来自: 人大经济论坛 详细出处参考:
http://www.pinggu.org/bbs/viewth ... &from^^uid=957621