Question: all questions please and using excel a) Plot the above data on a graph. Do you observe any trend, cycles, or random variations? b) Starting

all questions please and using excel

a) Plot the above data on a graph. Do you observe any trend, cycles, or random variations? b) Starting in year 4 and going to year 12, forecast demand using a 3-year moving average. Plot your forecast on the same graph as the original data. c) Starting in year 4 and going to year 12, forecast demand using a 3-year moving average with weights of .1,.3, and .6, using . 6 for the most recent year. Plot this forecast on the same graph

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