please help me with every step in this problem!!!

instead of only showing the answers can you please show me how to get the answers!

I have the answers! I am just not sure how to get them!

1. a. 1: 1000; 2: 1070; 3:1081; 4: 1228; 5:1568 b. MAD= 463.25; MSE=326,967.3 Exponential smoothing d. Consumer survey c. 2. (28 pts) a. The demands in period 1-5 are given in the following table. Please use exponential smoothing (a = 35%) to develop demand forecasts for periods 2 through 5. Assume that the forecast for period 1 is 1000. Round all forecasts to the nearest whole number. Period Demand Forecast 1 1200 2 1100 3 1500 4 2200 5 2000 b. Based on your forecasts in Part a., compute the mean absolute deviation and mean square error for periods 2 through 5. c. If the mean absolute deviation for the forecasting results based on consumer survey is 501.5, which method you recommend consumer survey or exponential smoothing according to mean absolute deviations? d. If the mean square error for the forecasting results based on consumer survey is 291,053, which method you recommend consumer survey or exponential smoothing according to mean square cor