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Question 18 (2 points) Does forecast A have any bias? If not, enter NO. If it has bias, enter underforecasting o overforecasting depending on which is true. Do not include any punctuation. Question 19 (1.5 points) What is the mean absolute deviation for forecast A? Answer to two decimal places. Your Answer: Your Answer Question 20 (1.5 points) What is the mean absolute deviation for forecast B? Answer to two decimal places. Your Answer: Your Answer Forecasting Your historical sales and two forecast approaches are provided in the Table below. Sales Forecast A Forecast B 40 20 37.5 30 25 35 50 30 47.5 40 35 45 60 40 57.5 40 35 45 Question 18 12 noints) Question 21 (2 points) Which forecast is preferred given mean absolute deviations? Enter A or B and not punctuation. Question 22 (1.5 points) What is the mean squared error for forecast A? Answer to two decimal places. Your Answer: Your Answer Question 23 (1.5 points) What is the mean squared error for forecast B? Answer to two decimal places. Your Answer: Your