Consumer Price Index (CPI) is an index measuring changes over time in the price level of consumer goods and services purchased by residents, which comprehensively reflects the changes of price level.
2. Statistical Coverage
Consumer Price Index (CPI) covers the prices of goods and services of eight categories and 262 basic divisions which cover the living consumption of urban and rural residents, including food; tobacco, liquor and articles; clothing; household facilities, articles and maintenance services; health care and personal articles; transportation and communication; recreation, education, culture articles and services and residence.
3. Survey Methods
The prices collection units are selected and determined by sample survey methods, and the original data of consumer prices are collected by specific person in fixed place at fixed time. Data are collected from 63,000 prices collection units in 500 cities and counties of the 31 provinces (autonomous regions and municipalities), which cover grocery stores, department stores, supermarkets, convenience stores, professional markets, franchise houses, shopping centers, open fairs and service consuming units etc.