Table V.

Fourier ADF, Fourier GLS, Fourier LM and Fourier KPSS test results-with constant model

IUnit root test typeIIndustrial production index (logipi) constant and trend modelIAtmospheric carbon emissions (logcarbon) constant and trend model
Fourier ADF test (Enders and Lee, 2012, p. 197)ADF-stat = −6.6381*
Fourier = 3.0000
Lag = 12.0000
ADF-stat = −7.6393*
Fourier = 3.0000
Lag = 12.0000
Fourier LM test (Enders and Lee, 2012, p. 582)LM-stat = −6.0494*
Fourier = 1.0000
Lag = 11.0000
LM-stat = −7.6366*
Fourier = 3.0000
Lag = 12.0000
Fourier GLS test (Rodrigues and Taylor, 2012, p. 742)GLS-stat = −4.7745*
Fourier = 1.0000
Lag = 11.0000
GLS-stat = −6.7590*
Fourier = 2.0000
Lag = 12.0000
Fourier KPSS test (Becker, Enders and Lee, 2006, p. 389)KPSS-stat = 0.0694*
Fourier = 3.0000
KPSS-stat = 0.0124*
Fourier = 2.0000

Note:

Critical Value (*) 1% and (**) 5% are −3.637 and −3.017, respectively

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