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(a)Explain the four steps of Box-Jenkin's methods of forecasting. (b)Using Box-Jenkin's four-step method, forecast the US quarterly GDP for the second quarter of 2015.

(a)Explain the four steps of Box-Jenkin's methods of forecasting.

(b)Using Box-Jenkin's four-step method, forecast the US quarterly GDP for the second quarter of 2015.

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