This paper analyze volatility persistence in global prices of wheat, rice and corn using monthly price data for two sample periods, before and after the shock on global food commodity markets on November 2007. Our findings show evidence of structural change in price trend in the post-shock...

The aim was to show the possibility of using time-series properties combined with the ongoing impact of the factors of a quantitative and qualitative nature. The study also determined the impact on the incomes from selected products, projected in 2015, the pace of changes in the prices of...