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Tramo/Seats vs. X12 ARIMA

Posted: Thu Sep 07, 2017 12:52 am
by Bablowski
Hello,

I try to seasonally adjust time series of monthly variable by Tramo/Seats. EViews gives me the result of N/A. I understand it that there is no seasonality in the time series. But I tried to apply X12 ARIMA for the same time series and according to the F-test there is no evidence of stable seasonality but there is a moving seasonality. Is there any way how to set Tramo/Seats in EViews to get rid of the moving seasonality? Does the Tramo/Seats have the ability to identify moving seasonality at all? My primary target is to adjust time series by Tramo/Seats, but now I know there is some moving seasonality which I cannot get rid of. Please help me. Thank you.