ADF检验结果
Null Hypothesis: FC has a unit root
Exogenous: Constant, Linear Trend
Lag Length: 4 (Automatic based on SIC, MAXLAG=6)
t-Statistic Prob.*
Augmented Dickey-Fuller test statistic -4.757442 0.0052
Test critical values: 1% level -4.440739
5% level -3.632896
10% level -3.254671
PP检验结果
Null Hypothesis: FC has a unit root
Exogenous: Constant, Linear Trend
Bandwidth: 2 (Newey-West using Bartlett kernel)
Adj. t-Stat Prob.*
Phillips-Perron test statistic -1.582738 0.7720
Test critical values: 1% level -4.356068
5% level -3.595026
10% level -3.233456



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