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. 2022 Dec 8;11(1):30. doi: 10.1186/s40008-022-00291-7

Table 2.

Summary statistics for the variables and JB, ADF test

Variable obs mean median standard deviation skewness kurtosis Jarque–bera ADF
hr 2802 5793 5232 4362.09 1.19 5.68 1508.4*** − 4.73***
fr 2802 5430 4684 4853.52 1.83 9.06 5872*** − 3.77***
ovx 2802 36.63 31.79 21.84 4.50 34.46 125028*** − 3.05***
oilcv 2802 361.60 153.63 491.80 2.75 13.05 15322*** − 4.87***
oil 2802 53.74 53.21 17.88 − 0.30 3.25 49.55*** − 2.70**
bnd 2802 0.061 0.062 0.03 − 0.031 2.03 110.9*** − 1.90**

Table 2 provides the results of the Augmented Dickey-Fuller (ADF) test and it is conducted with an inteercept and lag length selected by Akaike Information Criterion (AIC)

*, **, *** denote significance at 10%, 5% and 1% level, respectively