Describe the various forecasting methods. What are the steps needed to develop a forecast? Explain how you could use Excel to help develop a forecast. Provide an example of an Excel forecast (you must use your own Excel software to model this -pics, pdf, pjg, etc are not allowed) for a future three months on one or more of the data files below. I have provided a copy with notes for this week's discussion below. Use any of the forecasting methods in your text or use Excel's forecast functions.