# random walk

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## random walk

*n.*

*Statistics*

A sequence of changes, either in the value of a random variable or in a process (as in the price of a share of stock), in which the direction and size of each change is randomly determined, subject to some specified rules.

## random walk

*n*

**1.**(General Physics) a mathematical model used to describe physical processes, such as diffusion, in which a particle moves in straight-line steps of constant length but random direction

**2.**(Statistics)

*statistics*a route consisting of successive and connected steps in which each step is chosen by a random mechanism uninfluenced by any previous step

## 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.

[1900–05]

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Noun | 1. | random walk - a stochastic process consisting of a sequence of changes each of whose characteristics (as magnitude or direction) is determined by chancestochastic process - a statistical process involving a number of random variables depending on a variable parameter (which is usually time) |

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