Week 3 DQ 1 Suppliers Suppliers. Should a firm attempt to have fewer or more suppliers? What are the advantages and disadvantages of each approach? Your initial post should be 200-250 words. Week 3 DQ 2 Forecasting Methods Forecasting Methods. Read Problem 6 in Chapter 6 of your textbook. Calculate and answer parts a through d. Include all calculations and spreadsheets in your post. Explain why the moving average method was used instead of another forecasting method. What might be another forecasting method that could prove to be just as useful? Your initial post should be 200-250 words.