Time Series Analysis Of The Retail Prices Of Yam In Nigeria, 2001 – 2006

ABSTRACT

In recent years. the prices of yam has increased astronomically and has defied all and government to bring it down through increased production. At his point, this work wishes to confirm that the efforts of individuals, corporate bodies and government at maintain normal prices of yam in Nigeria has an underlying growth trend The estimated autocorrelation function and partial autocorrelation function where compared with the theoretical autocorrelation and partial autocorrelation function, which indicates that the data series followed an autoregressive model of order one and moving average of order one. The fitted box-Jenkins model was used to make forecast and we observed an increase in prices of yam at earlier periods which suggests the likely rise of prices of yam in Nigeria