Burger Lover Restaurant forecasts weekly sales of cheeseburgers. Based on historical observations over the past five weeks, make a forecast for the next period using the following methods: simple average, three-period moving average, and exponential smoothing with a=0.3, given a forecast of 326 cheeseburgers for the first week. (Round your answers to 2 decimal places,e.g. 250.25) Simple average: F6= 3-Period moving average: F6= Exponential smoothing: F6= If actual sales for week 6 turn out to be 362, compare the three forecasts using MAD. Which method performed best? (Calculate your answers using the error only in period 6.) MAD( simple average )= MAD (3-period moving average )= MAD (exponential smoothing) = provides the lowest MAD