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Time series Identify a specific ARIMA (p,d, q) model and say whether the model is stationary or not: 4.1x, =0,*1 1+ X1-1 - 0,X1-2 +

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Identify a specific ARIMA (p,d, q) model and say whether the model is stationary or not: 4.1x, =0,*1 1+ X1-1 - 0,X1-2 + 6, [3] 4.2 X, = 2X1 1-X,-2 + 6, - 0,61 1 (3] [6 Marks]

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