Question: A) Use a two-month moving average on all the data and plot the averages and the prices. B) Use a three-month moving average and add

A) Use a two-month moving average on all the data

A) Use a two-month moving average on all the data and plot the averages and the prices.

B) Use a three-month moving average and add the three-month plot to the graph created in part A.

C) Which is better (using the mean absolute deviation): the two-month average or the three-month average?

D) Compute the forecast for each month using exponential smoothing, with an initial forecast for January of $1.80. Use (alpha) = .1, then = .3 and finally = .5. Using MAD, which is the best?

4.9 Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the past 12 months were as follows: MONTH PRICE PER CHIP MONTH PRICE PER CHIP $1.80 July 1.80 January February March 1.67 1.83 August September 1.70 1.70 April 1.85 October 1.65 May 1.90 November 1.70 June 1.87 December 1.75

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