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i search a cointegration realation between expenditure et revenues (% GPD), it's possible that the johasen tets reject does not reject the null hypotheses , or when i do the Engle Granger test i found that the residuals are stationnary .

please i need an answer . thank you .

for doing this test you use the series in level , and eviews make the test after that in difference , because the test of johansen is in the difference .

I Want to Scheck a cointegration analyses between the expenditure and revenue of span(%GDP) , i have found that the series are stationary when i do the unit root test with only drift , no trend , nut with trend the two series are not stationary . Then i can do a Johansen test, but i have not found a...