The document discusses different methods of calculating inflation including the wholesale price index, consumer price index, and GDP deflator. It provides details on the composition and calculation of the consumer price index and shows data on inflation rates in India from 1980-2011 as measured by CPI and WPI. Line charts compare movements in CPI, WPI, and GDP deflator over time. Tables list the components of the consumer price index basket and provide inflation data for various categories from January to September.