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 445 500
June 495 530
July 545 400
August 610 470
September 660 685
October 690 625

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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