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  3. Forecasting Product Demand in R

Exercise

Calculate bottom-up forecast for whole region

Perfect! Now you have a forecast for the high value product in the metropolitan region in the object pred_MET_hi_xts (the regression was the best) and a forecast for the specialty product in the object for_MET_sp_en (the ensemble was the best). I have also forecasting the low value product in the region for you and the forecast is in the object pred_MET_lo_xts (the regression was the best). Now you can build a bottom-up forecast of the whole metropolitan region!

Instructions

100 XP
  • Add the three forecasts of each product defined above to build the whole region sales forecast.
  • Calculate the MAPE of this total forecast compared to the validation data set MET_t_v.