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definitions

  1. A method of measuring a segment of the economy by tracking changes in representative data. See Consumer Price Index; Employment Cost Index; Export Price Index; Import Price Index; Help Wanted Index; ISM Index; Leading Indicator Index; Producer Price Index; Consumer Sentiment Index.

  2. A composite measure of 1) a segment of the economy or the economy as a whole 2) the performance of an industry, sector, or the broader market. See Dow Jones Industrial Average; S&P 500; NASDAQ 100; Russell 3000; Wilshire 5000.