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The table named Sales to the right, shows the sales of a supermarket (in thousand dollars) in the last 12 months. Note: to facilitate answering
The table named "Sales" to the right, shows the sales of a supermarket (in thousand dollars) in the last 12 months. Note: to facilitate answering the questions in the next two sheets, use Excel Data Analysis Tool Pack (except for questions 1b and 2d); 1 2 3 4 5 6 7 8 9 H 0 H H H N a) Develop the 2-month and 3-month moving averages for the supermarket sales. Note: use data analysis tool pack. b) Which moving average appears to provide more accurate forecasts based on MAE? Explain. Note: show your MAE calculations. a) Use a = .2 to compute the exponential smoothing forecast for the supermarket sales. b) Use a = .3 to compute the exponential smoothing forecast for the supermarket sales. c) Use t! = .4 to compute the exponential smoothing forecast for the supermarket sales. d) Does a smoothing constant of .2, .3 or .4 appear to provide more accurate forecasts based on MSE? Explain. Note: show y-Iaur MSE calculations
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