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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.
Consumer price index (CPI) is a statistic used to measure average price of a basket of commonly used goods and services in a period relative to some base period. XplainD Consumer Price Index Consumer price index (CPI) is a statistic used to measure average price of a basket of commonly used goods and services in a period relative to some base period. The base period price of the basket is marked to 100 and CPI value hovers above or below 100 to reflect whether the average price has increased or decreased over the period.