You have shown the "Forecasting - Part 1" results to the owner of Engel Corner. Upon reviewing the data behavior, the owner's daughter, who has a bachelor's degree in mathematics, recommends one additional forecasting approach. She suggests that you take the average of each month in a prior year to create a seasonal average forecast. For example, for a given Month 7 forecast, all of the prior July months (i.e., Month 7, Month 14, etc.) would be averaged