Question: An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data: Year Quantity Sold Forecast 4

An operation analyst is forecasting this year's demand for one of his company's products based on the following historical data:

Year Quantity Sold Forecast
4 years ago 11556 11144
3 years ago 12166 11751
2 years ago 13474 12837
Last year 14108 14623

What was the mean absolute percent error for these forecasts?

a.

0.0392818

b.

1979

c.

151958

d.

3.83861

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