Answer:
CPI
Explanation: CPI measures the average changes in prices overtimes that consumers pay for a basket of goods and services commonly known as inflation. It attempts to qualify the aggregate price level in an economy and thus measure the purchasing power of the country's unit of currency. The weighted average of the prices of goods and services that approximates an individual's consumption pattern is used to calculate the CPI.
CPI is used as an economic indicator.
It is more used to measure inflation.
CPI covers professionals, self-employed, poor, unemployed and retired person
Two care reported each time CPI-W and CPI-U