price index

A price index is a numerical time series measure designed to help compare how the prices of some class of goods and/or services, taken as a whole, differ between time periods or geographical locations. In the latter case, these are known as purchasing power parity measures. The class of goods can be quite broad; in a consumer price index, for instance, the class of goods is roughly "things bought by a typical urban consumer". As an example of a narrower index, the United States Bureau of Labor Statistics has a price index for "steel mill products". Sometimes an index will be very specific, as in the US Energy Information Administration index entitled "Gasoline - All Grades".
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Noun
1. an index that traces the relative changes in the price of an individual good (or a market basket of goods) over time
(synonym) price level
(hypernym) index, index number, indicant, indicator
(hyponym) retail price index

A price index is a tool that simplifies the measurement of movements in a numerical series. Movements are measured with respect to the base period, when the index is set to 100.

Current price expressed as a proportion to the same price in an earlier time period, commonly called the base period. Monthly price indexes computed by the National Agricultural Statistics Service are the index of prices received by farmers and the index of prices paid by farmers for commodities and services, interest, taxes, and farm wage rates. The ratio of these two indexes is referred to as the parity ratio.
  

Price index
(Econ) Chỉ số giá.+ Một số chỉ số cho thấy giá của một tập hợp hàng hoá đã thay đổi thế nào từ một thời kỳ nào đó tới thời kỳ tiếp theo.
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price-index
danh từ chỉ số giá cả
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