Demand for a newly introduced toy is as following: Period At 1 557 2 546 3 566 4 562 5 582 6 566 7 565 8 579 9 589 10 608 11 580 12 603 Using trend projection (simple regression), forecast for period 13 through 15. Using the trend projection equation, forecast for period 1 through 12, and calculate MAD. Based on your analysis of MAD, what conclusion would you draw for forecasts 13 through 15?