摘要：In this paper titled ‘ On the Time Series Analysis of Consumer Price Index data of Nigeria -1996 to 2013’, the monthly CPI data collected from the CBN website was used. Although Time Series approach was adopted in the main analysis of the data, descriptive statistics of the data showed, inter alia, that the indicator has neither fallen below 21.19 nor risen above 152.29 within the specified period. A Seasonal Auto Regressive Integrated Moving Average (SARIMA) model of best fit to the data was discovered to be SARIMA (1, 2, 1) (0, 0, 1)12. Forecasts were made using the model and a t- test for the difference of two means of the forecast and the observed CPI values was carried out at 5% level of significance. Interestingly, the test shows no significant difference between the two.
关键词：Consumer Price Index; Time Series; Stationarity; Seasonality; ARIMA
