Forecast Results
Once the coefficients have been determined, they are used to calculate the forecast value. These forecasts are most accurate for the next day, and should be used with less confidence for subsequent days.
What if the forecast does not work? First. the process should be checked to be certain that it was performed properly. Pay particular attention to the removal of trends using the correlogram. Next, check the data used in the process. if the data sample is changing (which can be observed on a price chart), select either a shorter or longer period that contains more homogeneous data, that is. data similar to the current market period.