After introducing the inflation expectation, this paper uses the co-integration\ntest and VAR model to analyze the price fluctuation of agricultural products\nand the paper analyzes the relationship between inflation and inflation expectation.\nThe results show that there is no co-integration relationship between\nagricultural product price fluctuation, inflation expectation and inflation, but\nagricultural product price fluctuation is Granger reason of inflation expectation.\nThere is bi-directional Granger causality between inflation expectation\nand inflation. In the short run, there is volatility between the three in the current\nor lag phase 1 to reach the maximum.
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