Solution:In India, the rate of inflation is generally measured on the basis of Consumer Price Index (CPI), Wholesale Price Index (WPI) and Labour Cost of Living Index. At present, RBI uses Consumer Price Index (CPI) (Combined) as the key measure of inflation.The Wholesale Price Index (WPI) measures and tracks price changes in the wholesale market, focusing on goods traded between companies. It excludes services and is calculated monthly, representing a broad view of inflation at the wholesale level. In India, it is published by the Office of Economic Adviser, Department for Promotion of Industry and Internal Trade, with base year 2011-12.
The Consumer Price Index (CPI) tracks changes in the cost of a typical basket of goods and services over time, reflecting the overall shift in consumer prices. It is a key inflation measure monitored closely by policymakers, financial markets, businesses, and consumers alike. Unlike WPI, it includes services. The Central Statistics Office of the Ministry of Statistics and Programme Implementation publishes it.
The Producer Price Index (PPI) measures price changes from the perspective of producers, capturing input cost changes across manufacturing and production sectors. While PPI does not account for consumer prices, it provides insight into cost pressures that may eventually impact retail prices.