Question: Here are the errors associated with a particular forecast over the past five months, in chronological order: 5, 10, -10, 0, 10. Which of the
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Here are the errors associated with a particular forecast over the past five months, in chronological order: 5, 10, -10, 0, 10. Which of the following statements is (are) true?
I. The mean error over these five months is 3. II. The forecast was too high during the third month. III. The forecast was perfectly accurate during one of the months.
a. I and III
b. III only
c. II only
d. I, II and III
e. I only
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