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The difference between CPI and PCE seemed relatively insignificant. However, a big issue is the difference between CPI and Core CPI. CPI is the consumer price index. A measure of the cost of living for the typical person. Core CPI is the CPI â energy and food prices.
From Wikipedia, the free encyclopedia. The general price level is a hypothetical daily measure of overall prices for some set of goods and services (the consumer basket), in an economy or monetary union during a given interval (generally one day), normalized relative to some base set.ypically, the general price level is approximated with a daily price index, normally the Daily CPI. The general price level can change more than once per day during hyperinflation.