"random walk." YourDictionary, n.d. Web. 18 October 2018. <http://www.yourdictionary.com/random-walk>.
random walk. (n.d.). Retrieved October 18th, 2018, from http://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.