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Q 3 . ( 2 0 marks ) a . Assume you decide to fit the following model: y _ ( t ) = y
Q marks a Assume you decide to fit the following model: ytytphi ytytphi ytytphi ytytet where et is a white noise series. What sort of ARIMA model is this ie what are p d and q b Assume you decide to fit the following model: ytphi ytytphi ytcepsi lonttheta epsi lont Where et is a white noise series. What sort of ARIMA model is this Hint: this is a seasonal ARIMA with m
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