Question: When creating a time seriesbased forecast for the amount of soda to be sold in the cafeteria next week, which data sources can you include

When creating a time series–based forecast for the amount of soda to be sold in the cafeteria next week, which data sources can you include in your forecasting process?

a. The opinion of the principal

b. Old demand data

c. Data about upcoming sports events

d. The age of the cafeteria worker

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