Very professional interview process, he user can also determine whether all possible models are estimated and compared (full enumeration) instead of using the default stepwise algorithm. The stepwise algorithm has been shown to have good performance characteristics, and is much less computationally intensive, however, it is not guranteed to find the best single model. Estimating all possible ARIMA models will find the single best model, but with a significantly greater runtime. If full enumeration is selected, the user can place some limits on the space searched by setting the maximum allowed order of the model. In add