Its a forecasting question. please do not copy paste answers from internet.

Forecasting Consider the following time series representing quarterly sales of dishwashers at Big Boys Appliances over the past two years: Time Sales Time Sales 2010 Q 1 25 2011 Q 1 76 2010 Q 2 86 2011 Q 2 125 2010 Q 3 64 2011 Q 3 105 2010 Q 4 30 2011 Q 4 90 Answer the following questions. Show ALL calculations. (a) (8 Points) Forecast the demand for dishwashers using a three-period weighted moving average with weights 4 assigned to the most recent period, and 2 and 1 assigned to two periods ago and three periods ago, respectively. Time Sales 2010 Q1 25 2010 Q2 86 2010 Q3 64 2010 Q4 30 2011 Q1 76 2011 Q2 125 2011 Q3 105 2011 Q4 90 Forecast Absolute Deviation (b) (8 Points) Forecast the demand for dishwashers using exponential smoothing with . Use 2010 Q1 Sales as the forecast for 2010 Q2. Time Sales 2010 Q1 25 2010 Q2 86 2010 Q3 64 2010 Q4 30 2011 Q1 76 2011 Q2 125 2011 Q3 105 2011 Q4 Forecast Absolute Deviation 90 (c) (4 Points) Based on the forecast errors from the 4th Quarter in 2010, which forecasting method is better? And why