Question: Problem 1 : If the forecast errors for four consecutive periods are 4 , - 6 , 8 , and 6 , what are: a

Problem 1:
If the forecast errors for four consecutive periods are 4,-6,8, and 6, what are:
a) the mean absolute deviation?
b) the mean squared error?
Problem 1: If the forecast errors for four consecutive periods are

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