Let the following table represent the number of cars sold by a dealer in the previous six weeks. Find the moving average of the last four weeks to determine the sales for the seventh week. How does it differ from the average of all the six weeks? WEEK SALES 1 20 2 24 3 22 4 26 5 21 6 22 2. The following table represents the forecast demand as well as the actual demand of tables for the last 6 months. Calculate the Mean Absolute Deviation (MAD), Mean Squared Error (MSE) and Mean Absolute Percent Error (MAPE). For this data. Month Forecast Actual 1 66 70 2 84 76 3 75 78 4 83 79 5 93 85 6 89 95