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Index |
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Index Statistical composite that measures changes in the economy or in financial markets, often expressed in percentage changes from a base year or from the previous month. Indexes measure the ups and downs of stock, bond, and some commodities markets, in terms of market prices and weighting of companies in the index.
Index. An index reports changes up or down, usually expressed as points and as a percentage, in a specific financial market, in a number of related markets, or in an economy as a whole. Each index -- and there are a large number of them -- measures the market or economy it tracks from a specific starting point. That point might be as recent as the previous day or many years in the past. For those reasons, indexes are often used as performance benchmarks against which to measure the return of investments that resemble those tracked by the index. A market index may be calculated arithmetically or geometrically. That's one reason two indexes tracking similar markets may report different results. Further, some indexes are weighted and others are not. Weighting means giving more significance to some elements in the index than to others. For example, a market capitalization weighted index is more influenced by price changes in the stock of its largest companies than by price changes in the stock of its smaller companies. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Various other rheometers and indexers are described in the literature. Information is prepared in the form of "citations"--one for each article--by NLM's skilled indexers and revisers who code each article according to such categories as author's name, the title of the article, the name and date of the journal in which it appeared, the language in which it was written, and a number of medical subject headings that describe as completely as possible the article's subject content. A cam indexer advances the fixtured component through separate blasting and airwash chambers in the cabinet before returning the finished component to the unloading position at the front of the machine. |
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