I would like help with determining how to make a "TREND MODEL" tab, using my data I would like assistance / an explanation as to how to create a trend adjusted model. Then Using this model develop a forecast for the four quarters beyond your data. Calculate MAD and Bias using the third and fourth years of my data (8 quarterly periods). Could I get a brief explanation of the selection of start-up values for the model and what the MAD and Bias indicate about the model.