## Look up: random-walk

1. 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 consistently without taking additional risk.
Found on http://www.encyclo.co.uk/local/20047

2. Random Walk
A walk in one or more dimensions that is dictated by the outcome of a coin toss. The direction of each step of the walk is specified by the coin toss. The resulting random motion is often referred to as Brownian motion.
Found on http://mitpress.mit.edu/books/FLAOH/cbnhtml/glossary.html

3. Random Walk
Is the financial theory that asserts that changes in price or rate time series are unpredictable. However, the theory recognizes that there is a statistical interdependency between the data. This non-random stickiness is sometimes referred to as autocorrelation or serial correlation.
Found on http://www.oasismanagement.com/glossary/

4. Random walk
A probability model for movement direction and angle often simulated using Monte Carlo methods.
Found on http://www.encyclo.co.uk/visitor-contributions.php

5. Random walk
The theory espoused by French Mathematician Louis Bachelier in 1900 which posits that past share... <a target=_blank href='http://www.finance-glossary.com/terms/random-walk.htm?id=1208&ginPtrCode=00000&PopupMode=false' title='Read full definition of random walk'>more</a>
Found on http://www.finance-glossary.com/pages/home.htm

6. Random walk
Price changes in securities that are (a priori) purely random. Expected behaviour in efficient markets....more on Random walk
Found on http://moneyterms.co.uk/p/

7. random walk
A description of the path followed by a cell or particle when there is no bias in movement. The direction of movement at any instant is not influenced by the direction of travel in the preceding period. If changes of direction are very frequent, then the displacement will be small, unless the speed ...
Found on http://www.encyclo.co.uk/visitor-contributions.php

8. random walk
<cell biology> A description of the path followed by a cell or particle when there is no bias in movement. The direction of movement at any instant is not influenced by the direction of travel in the preceding period. If changes of direction are very frequent, then the displacement will be sma...
Found on http://www.mondofacto.com/facts/dictionary?random+walk

9. random walk
noun a stochastic process consisting of a sequence of changes each of whose characteristics (as magnitude or direction) is determined by chance
Found on http://wordnetweb.princeton.edu/perl/webwn?s=random%20walk

1. random walk
A random walk is a random process yt like: yt=m+yt-1+et where m is a constant (the trend, often zero) and et is white noise. A random walk has infinite variance and a unit root. Source: Greene, 1993, p 559 Contexts: econometrics; stati...
Found on http://www.econterms.com/glossary.cgi?query=random+walk

2. random walk
in probability theory, a process for determining the probable location of a point subject to random motions, given the probabilities (the same at ... [5 related articles]
Found on http://www.britannica.com/eb/a-z/r/11

3. 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. For a simple random walk, the best forecast of tomorrow`s price is today`s price. Related: Mean reversion.
Found on http://www.duke.edu/~charvey/Classes/wpg/bfglosr.htm

4. Random Walk
Opinion that daily stock price changes are random, independent of each other, each having the same probability distribution. Discover What It`s Like to Live Easy With EquiTrend
Found on http://www.equitrend.com/glossary3197.xhtml

5. Random walk
Long range correlated time series is found in many biological, climatological and economic systems, including heartbeat, temperature records and volatility of stocks. ===Long-range correlated walks=== Long-range correlated time series are found in many biological, climatological and economic system...
Found on http://en.wikipedia.org/wiki/Random_walk

6. random walk
In door to door surveys, a technique for gathering a random sample of households after starting at a particular point. E.g. turning left after leaving the first house, walking anti-clockwise around the block and trying to interview somebody at every fourth house. Notice that, though it`s called a ra...
Found on http://www.oenb.at/dictionary/termini.jsp?EINTRAG_ID=2148

7. random walk
A process in which the position of a particle changes by discrete steps of fixed length, and the direction of each step is chosen randomly. Random walks have interesting mathematical properties that vary greatly depending on the number of dimensions in which the walk takes place and whether it is co...
Found on http://www.daviddarling.info/encyclopedia/R/random_walk.html

8. Random Walk
Is the financial theory that asserts that changes in price or rate time series are unpredictable. However, the theory recognizes that there is a statistical interdependency between the data. This non-random stickiness is sometimes referred to as autocorrelation or serial correlation.
Found on http://www.oasismanagement.com/glossary/

9. Random Walk
Theory that stock price changes from day to day are accidental or haphazard; changes are independent
Found on http://www.encyclo.co.uk/local/22402

10. RandomWalk
RandomWalk is a Greek heavy metal band based in Athens. Formed in early 2005 , the group consists of vocalist Jean Baptiste, keyboard player Dorian, guitarist Vortimer, drummer Harry Mason and bassist Constantine. The band is considered to be affiliated with the progressive gothic metal subgenre . ...
Found on http://en.wikipedia.org/wiki/RandomWalk

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