"random walk." YourDictionary, n.d. Web. 15 January 2019. <https://www.yourdictionary.com/random-walk>.
random walk. (n.d.). Retrieved January 15th, 2019, from https://www.yourdictionary.com/random-walk
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.