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random movements

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  • random walk — n. Math. a sequence of movements in which the direction of each successive move is determined entirely at random …   English World dictionary

  • Random walk — A random walk, sometimes denoted RW, is a mathematical formalization of a trajectory that consists of taking successive random steps. The results of random walk analysis have been applied to computer science, physics, ecology, economics and a… …   Wikipedia

  • Random number generation — A random number generator (often abbreviated as RNG) is a computational or physical device designed to generate a sequence of numbers or symbols that lack any pattern, i.e. appear random. Computer based systems for random number generation are… …   Wikipedia

  • Random walk hypothesis — The random walk hypothesis is a financial theory stating that stock market prices evolve according to a random walk and thus the prices of the stock market cannot be predicted. It has been described as jibing with the efficient market hypothesis …   Wikipedia

  • Random walk — Theory that stock price changes from day to day are at random; the changes are independent of each other and have the same probability distribution. Many believers of the random walk theory believe that it is impossible to outperform the market… …   Financial and business terms

  • random walk — Theory that stock price changes from day to day are accidental or haphazard; changes are independent of each other and have the same probability distribution. Many believers in the random walk theory believe that it is impossible to outperform… …   Financial and business terms

  • random-walk theory — The theory that prices on a financial market move, for whatever reason, without any memory of past movements and that the movements therefore follow no pattern. This theory is used to dispute the predictions of chartists, who do rely on past… …   Accounting dictionary

  • random-walk theory — The theory that prices on a financial market move, for whatever reason, without any memory of past movements and that the movements therefore follow no pattern. This theory is used to dispute the predictions of chartists, who do rely on past… …   Big dictionary of business and management

  • random walk — /ˌrændəm wɔ:k/ noun 1. a sampling technique which allows for random selection within specific limits set up by a non random technique 2. a movement which cannot be predicted (used to describe movements in share prices which cannot be forecast) …   Dictionary of banking and finance

  • random walk — noun A stochastic path consisting of a series of sequential movements, the direction (and sometime length) of which is chosen at random Syn: drunkards walk …   Wiktionary

  • random walk — noun Date: 1905 a process (as Brownian motion or genetic drift) consisting of a sequence of steps (as movements or changes in gene frequency) each of whose characteristics (as magnitude and direction) is determined by chance …   New Collegiate Dictionary

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