Question: Problem 18-23 (Algo) After using your forecasting model for six months, you decide to test it using MAD and a tracking signal. Here are the

Problem 18-23 (Algo)

After using your forecasting model for six months, you decide to test it using MAD and a tracking signal. Here are the forecast and actual demands for the six-month period:

PERIOD FORECAST ACTUAL
May 455 510
June 505 510
July 555 410
August 625 480
September 665 680
October 675 620

a. Find the tracking signal. (Negative values should be indicated by a minus sign. Round your answers to 2 decimal places.)

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