Question: Here are the errors associated with a particular forecast over the past five months, in chronological order: 2,5,0,5,10. Which of the following statements is (are)

 Here are the errors associated with a particular forecast over the

Here are the errors associated with a particular forecast over the past five months, in chronological order: 2,5,0,5,10. Which of the following statements is (are) true? I. The forecast was too high during the fifth month. II. The mean error over these five months is 2 III. The forecast was perfectly accurate during one of the months. a. III only b. I and III c. I only d. I, II and III e. Il only

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