Homework: HW4 F18 (25) Score: 7.8 of 13 pts & Problem 4.8 2 of 2 (2 complete) Da
ID: 398362 • Letter: H
Question
Homework: HW4 F18 (25) Score: 7.8 of 13 pts & Problem 4.8 2 of 2 (2 complete) Daily high temperatures in St. Louis for the last week were as follows: 93, 92, 93, 94, 95, 88, 93 (yesterday). a) The high temperature for today using a 3-day moving average 92 degrees (round your response to one decimal place) b) The high temperature for today using a 2-day moving average 90.5 degrees (round your response to one decimal place). c) The mean absolute deviation based on a 2-day moving average 2.3 degrees (round your response to one decimal place) d) The mean squared error for the 2-day moving average-degrees? (round your response to one decimal place)Explanation / Answer
d. Mean squared error (MSE) = sum of (forecast errors)^2/n
Thus MSE = 49.25/5
= 9.85. This will be rounded off to 9.9
Thus MSE = 9.9
Day Actual Forecast Error Error^2 1 93.00 2 92.00 3 93.00 92.50 0.50 0.25 4 94.00 92.50 1.50 2.25 5 95.00 93.50 1.50 2.25 6 88.00 94.50 (6.50) 42.25 Yesterday 7 93.00 91.50 1.50 2.25 Today 90.50 Total 49.25Related Questions
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