Exhibit 18

question 43

Multiple Choice

Exhibit 18.2.The following table includes the information about a monthly time series. Refer to Exhibit 18.2.When the exponential smoothing method with α = 0.1 is applied,what is the mean absolute deviation (MAD) ?

• A)20.796
• B)9.16
• C)3.05
• D)3.56

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