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a. i. Describe the steps that Box and Jenkins (1976) suggested should be involved in constructing an ARMA model. (5 marks) ii. What particular aspect

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a. i. Describe the steps that Box and Jenkins (1976) suggested should be involved in constructing an ARMA model. (5 marks) ii. What particular aspect of this methodology has been the subject of criticism and why? (5 marks) iii. Describe an alternative procedure that could be used for this aspect

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