Question: Printed (Chinese) Name: THU ID: Class: Problem 7(10 points) The last four weekly values of sales were 80, 100, 105, and 90 units, respectively. I

Printed (Chinese) Name: THU ID: Class: Problem 7(10 points) The last four weekly values of sales were 80, 100, 105, and 90 units, respectively. I last four forecasts (for the same four weeks) were 60, 80, 95, and 75 units, respectiv Calculate the MAD, MSE, and MAPE for these four weeks. Forecast Sales 80 60 80 95 90

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