A Seasonal Box-Jenkins Model for Nigerian Inflation Rate Series

  •  Ette Etuk    
  •  Stella Attoe    
  •  Isaac Essi    


Time series analysis of Nigerian Inflation rate series is done. A seasonal difference and then a non-seasonal one were obtained. The correlogram of the differenced series revealed a seasonal nature. It also revealed a seasonal moving average component and a non-seasonal autoregressive component. $A (5,1,0)\times(0,1,1)_{12}$ seasonal model was fitted and shown to be adequate.

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