I need help with discussion questions #1-8 in the picture. Please clearly as much as possibe.

DISCUSSION 1 Describe briefly the steps used to develop a forecast- ing system. 2 What is a time-series forecasting model? 3 What is the difference between a causal model and a time-series model? 4 What is a qualitative forecasting model, and when is it appropriate? 5 What are some of the problems and drawbacks of the moving average forecasting model? 6 What effect does the value of the smoothing con- stant have on the weight given to the past forecast and the past observed value? 7 Describe briefly the Delphi technique. 8 What is MAD, and why is it important in the selec- tion and use of forecasting models