Question: 1. Exercise One: Given the date below for Prats Engineering, and using your in-class lecture notes as your guide, (a) find the Centered Moving Average

1. Exercise One: Given the date below for Prats

1. Exercise One: Given the date below for Prats Engineering, and using your in-class lecture notes as your guide, (a) find the Centered Moving Average as shown in class (use the same weights as shown in the Module), (b) compute the Seasonal Ratio, (c) find the Seasonal Index, (d) calculate the Deseasonalized Values, (e) compute the Deseasonalized Forecast for the given series, (f) tabulate the Actual Forecast for the given series, (g) find the Mean Absolute Deviation, the Mean Squared Error, and the Mean Absolute Percentage Error, (h) forecast the Deseasonalized Values for periods 21, 22, 23, and 24, (i) forecast the Actual values for periods 21, 22, 23, and 24, (j - Optional Extra Credit) as shown in class, use the GRG-Non Linear Solver to find the weights that minimize the Mean Absolute Percentage Error (MAPE). 2008 2009 2010 2007 41 20 2011 183 102 30 Quarter 1 Quarter 2 Quarter 3 Quarter 4 102 61 41 41 142 122 91 71 10 51 132 51 162 223 355

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