The consumer price index is __

The consumer price index is a systematic calculation used to estimate price increases in a basket of goods and services that are indicative of consumption expenditure in the economy.

Explanation:

The Consumer Price Index refers to a metric used to determine the weighted average price of a set of consumer goods and services, such as food, transportation, and healthcare.  CPI is accountable for monitoring the change in retail prices of fundamental and everyday goods and services purchased by households across the world. Changes in the CPI are required to measure increases in the price of living. The CPI is one of the most commonly used indicators for the detection of inflation or deflation cycles.

answermarginal cost;