Question: 1. State ONE (1) main reason why exponential smoothing is preferably compared with moving average approach (2 marks) 2. Briefly explain the difference between univariate

1. State ONE (1) main reason why exponential

1. State ONE (1) main reason why exponential smoothing is preferably compared with moving average approach (2 marks) 2. Briefly explain the difference between univariate moving average method and moving average model (MA model) in Box-Jenkins methodology. (3 marks) 3. Briefly explain the autoregressive model (AR model) and write the general model of AR model. (4 marks) 4. List down THREE (3) items should be considered in identifying the possible model in nonseasonal ARIMA model (3 marks) 5. Elaborate THREE (3) stages in ARIMA modelling (6 marks)

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