I am doing a time series analysis and the first step to carry out the analysis is to check whether the variables are stationary or not. I applied dickey fuller unit root test but the result shows the data is not stationary. then i took the 1st difference and applied the test again but the result remains unchanged. I even went for the 2nd difference but the data is still non-stationary. I am using debt/gdp ratio, budget surplus/gdp ratio data. What could be the problem for this? and is there any alternative to make the data stationary.
if someone could provide me some suggestions.
thank you
if someone could provide me some suggestions.
thank you
