Question: need help on everything but mostly a and e 4.* Forecasts and actual sales of MP3 players at Just Say Music are as follows: Month

need help on everything but mostly a and e

4.* Forecasts and actual sales of MP3 players at Just Say Music are as follows: Month Forecast Actual Sales March 150 170 April 220 229 May 205 192 June 256 241 250 238 260 210 July August September October 270 225 280 179 a. Plot the data and provide insights about the time series. b. What is the forecast for November, using a two- period moving average? c. What is the forecast for November, using a three- period moving average? d. Compute MSE for the two- and three-period moving average models and compare your results. e. Find the best number of periods for the moving average model based on MSE

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