Why was the price of crude oil taken from the pricing index.?

cause and effectWhy was the price of crude oil taken from the pricing index.?
Which index?


I don't think crude oil is in the consumer price index, I don't many consumers buying crude oil. But gasoline is in the consumer price index. There is also a stat called core consumer price index which excludes gasoline and food prices, as they are very volitile, and it is sometimes useful to look at where prices are going w/o these two wildly changing groups included.

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