Modelling Cyclical Asymmetry in A Production Series Using Treshold Autoregressive Models

In recent years there is evidence in the literature that various time series like GNP or production may be nonlinear. In this paper the question is examined whether there are non-linearities in the net production index for the producing sector of the FRG. Three different non-linearity tests are applied on the stationary series and two exhibit clear nonlinearities. Therefore a SETAR-model was estimated and it was able to capture all the previous inherent non-linearities.