Question: What is the mean absolute deviation based on a 3-month moving average of March through December? (round answer to three decimal places) Lenovo uses the

What is the mean absolute deviation based on a 3-month moving average of March through December? (round answer to three decimal places)

Lenovo uses the ZX-81 chip in some of its laptop computers. The prices for the chip during the last 12 months were as follows: Month Price Per Chip Month Price Per Chip January $1.90 July $1.80 February $1.61 August $1.70 March $1.60 September $1.70 April $1.85 October $1.60 May $1.91 November $1.60 June $1.95 December $1.75 This exercise contains only parts a, b, and c. a) Using a 2-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Month Mar Apr May Jun Jul Aug Sep Oct Nov Dec Forecast $1.76 1.61 1.73 1.88 1.93 1.88 1.75 1.70 1.65 1.60 b) Using a 3-month moving average, the forecast for periods 11 and 12 is (round your responses to two decimal places): Month Apr May Jun Jul Aug Sep Oct Nov Dec Forecast $1.70 1.69 1.79 1.90 1.89 1.82 1.73 1.67 1.63 c) The mean absolute deviation based on a 2-month moving average of March through December is s (round your response to three decimal places)

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