Plot a graph - trend series and moving averages

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Reference no: EM1325845

Plot a graph: Trend Series and Moving Averages

Year 1 2 3 4 5 6 7 8 9 10 11
Demand 7 9 5 9 13 8 12 13 9 11 7

a. plot the above data on a graph. 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 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 on the same graph.

d. As you compare forecasts with the original data, which seems to give the better results?

Reference no: EM1325845

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