It actually means this. stock index Or Stock Market index.
Nikkei
http://sg.finance.yahoo.com/indices
The BSE Index or the Sensex as it is popularly known, is the index of the performance of the 30 largest & most profitable, popular companies listed in the index. Each company that is part of the index has its own weightage in the value of the Index
Instruments that derive their value from another security (the underlying security), such as a share, share price index, currency or bond.
I want use mathematical.
The same - because that is how "typical" would be defined.
If a stock in the Dow Jones Industrial Average, priced at around $60 per share, is replaced by a stock priced at about $3 per share, the divisor of the index would need to be adjusted. This adjustment ensures that the overall value of the index remains consistent despite the change in constituent stocks. The divisor is recalibrated to account for the difference in share price, maintaining the continuity and integrity of the index. Consequently, the divisor would increase to offset the lower price of the new stock, reflecting the change in the index's composition.
The FTSE index is a share index of 100 companies who operate in the UK. It stands for the Financial Times & Stock Exchange index. The latest value is always published on their website, or on any other reputable news site, such as BBC or the Huffington Post.
The FTSE 100 index or informally known as the "footsie" is a share index of the London Stock Exchange listing the top 100 of those companies with the highest market capitalization. The purpose of the FTSE 100 index would be to help traders keep an eye on stocks.
The NSE-20 share index is calculated using a market capitalization-weighted formula, which reflects the performance of the top 20 companies listed on the Nairobi Securities Exchange. The index value is derived by taking the total market capitalization of the selected companies and dividing it by a base market capitalization value, multiplied by a scaling factor to ensure the index is easily interpretable. Changes in stock prices, shares outstanding, and other market adjustments are factored in to provide an accurate reflection of market performance. Regular reviews ensure the index remains representative of the market.
The Johnston Power Index is a measure used in political science to assess the effectiveness of a political party's electoral system in converting votes into seats. It quantifies the degree of disproportionality in election results, reflecting how well a party's share of votes aligns with its share of seats in a legislative body. A lower index value indicates a more proportional representation, while a higher value suggests greater disparity between votes received and seats won. This index helps analyze the fairness and representativeness of electoral systems.
The average PE ratio for companies in the SP 500 index is around 25. This ratio is a measure of a company's stock price relative to its earnings per share.