How to calculate TS?

Starbucks has a large, global supply chain that must efficiently supply over 17,000 stores. Although the stores might appear to be very similar, they are actually very different. Depending on the location of the store, its size, and the profile of the customers served, Starbucks management configures the store offerings to take maximum advantage of the space available and custores of the larger retail stores. The coffeemaker has been a steady seller over the year dition. weeks is shown in the following table. (week 1 is the week before week 1 in the table, 2 is two weeks before 1 , etc.). implemented. The new system is programmed to use one of two forecasting models: simple moving average or exponential smoothing. b. Evaluate the forecasts that would have been made over the 13 weeks using the overall (at the end of the 13 weeks) mean absolute deviation, mean absolute percent error, and tracking signal as criteria. (Negative values should be indicated by a minus sign. Round all answers to 2 decimal places. Enter "MAPE" answers as a percentage rounded to 2 decimal places.) Starbucks has a large, global supply chain that must efficiently supply over 17,000 stores. Although the stores might appear to be very similar, they are actually very different. Depending on the location of the store, its size, and the profile of the customers served, Starbucks management configures the store offerings to take maximum advantage of the space available and custores of the larger retail stores. The coffeemaker has been a steady seller over the year dition. weeks is shown in the following table. (week 1 is the week before week 1 in the table, 2 is two weeks before 1 , etc.). implemented. The new system is programmed to use one of two forecasting models: simple moving average or exponential smoothing. b. Evaluate the forecasts that would have been made over the 13 weeks using the overall (at the end of the 13 weeks) mean absolute deviation, mean absolute percent error, and tracking signal as criteria. (Negative values should be indicated by a minus sign. Round all answers to 2 decimal places. Enter "MAPE" answers as a percentage rounded to 2 decimal places.)