Abstract
This article uses quantile regression and Granger Causal Relation Test modeling analysis of time series data to find out the price of crude oil influence on the price of coal. Results show that there is asymmetric relationship between the crude oil price and the price of coal, when the coal price is in a low number, the impact of crude oil price on coal price is significant, however with quantile values become larger, the price of crude oil and coal prices gradually decoupling.
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