Definitions for random walk
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Random House Webster's College Dictionary
ran′dom walk′(n.)
the path of a point or quantity that moves or changes in a stepwise manner, where the direction of each step is statistically random.
Category: Statistics
Origin of random walk:
1900–05
Princeton's WordNet
random walk(noun)
a stochastic process consisting of a sequence of changes each of whose characteristics (as magnitude or direction) is determined by chance
Wiktionary
random walk(Noun)
A stochastic path consisting of a series of sequential movements, the direction (and sometime length) of which is chosen at random
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"random walk." Definitions.net. STANDS4 LLC, 2013. Web. 22 May 2013. <http://www.definitions.net/definition/random walk>.