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Index numbers are used especially to compare business activity, the cost of living, and employment. They enable economists to reduce unwieldy business data into easily understood terms. In contrast to a cost-of-living index based on the true but unknown utility function, a superlative index number is an index number that can be calculated. [1]
Stock market indices may be categorized by their index weight methodology, or the rules on how stocks are allocated in the index, independent of its stock coverage. For example, the S&P 500 and the S&P 500 Equal Weight each cover the same group of stocks, but the S&P 500 is weighted by market capitalization, while the S&P 500 Equal Weight places equal weight on each constituent.
In statistics and research design, an index is a composite statistic – a measure of changes in a representative group of individual data points, or in other words, a compound measure that aggregates multiple indicators. [1] [2] Indices – also known as indexes and composite indicators – summarize and rank specific observations. [2]
Index funds are typically passively managed, meaning there is no active manager to pay. Rather than trying to bet on individual stocks to beat the market, an index fund simply aims to “be the ...
Index funds are passively managed, meaning they aim to replicate the performance of a specific market index, such as the S&P 500, rather than trying to outperform it. Fund managers allocate assets ...
A price index (plural: "price indices" or "price indexes") is a normalized average (typically a weighted average) of price relatives for a given class of goods or services in a given region, during a given interval of time.
Index card, used for recording and storing small amounts of data; Index Librorum Prohibitorum, a list of publications which the Catholic Church censored; Index on Censorship, a publishing organization that campaigns for freedom of expression, or its magazine of the same name; Index (publishing), an organized list of information in a publication
A CPI is a statistical estimate constructed using the prices of a sample of representative items whose prices are collected periodically. Sub-indices and sub-sub-indices can be computed for different categories and sub-categories of goods and services, which are combined to produce the overall index with weights reflecting their shares in the total of the consumer expenditures covered by the ...