4. The sales of water purifiers in a shop in 4 consecutive months are as given below. The magnitude of difference in the forecast for the next month using the exponential smoothing method with a smoothing constant of 0.3 and weighted moving average method with the water purifiers (in integer). (Assume the forecast weights as 0.1, 0.2, 0.3 and 0.4 will be for January is equal to demand in January. Your calculations and explanations are needed) (2 points)? Formulas: Months January February March April (Weight period n) x (Demandperiod n) Ft = Weights Ft = Ft-1 + a(At-1 - Ft-1) Output Multifactor Measures: MultipleInputs Di 1080 950 1050 1120

4. The sales of water purifiers in a shop in 4 consecutive months are as given below. The magnitude of difference in the forecast for the next month using the exponential smoothing method with a smoothing constant of 0.3 and weighted moving average method with the weights as 0.1,0.2,0.3 and 0.4 will be water purifiers (in integer). (Assume the forecast for January is equal to demand in January. Your calculations and explanations are needed) (2 points)? Formulas: Ft=Weights(Weightperiodn)Demandperiodn)Ft=Ft1+(At1Ft1)Output