Discrete random variable


A random variable that can take only a certain specified set of individual possible values-for example, the positive integers 1, 2, 3, . . . For example, stock prices are discrete random variables, because they can only take on certain values, such as $10.00, $10.01 and $10.02 and not $10.005, since stocks have a minimum tick size of $0.01. By way of contrast, stock returns are continuous not discrete random variables, since a stock's return could be any number.

Investing Essentials

Copyright © 2011 Campbell R. Harvey, Professor of Finance, Fuqua School of Business at Duke University

Term of the Day

Bank anticipation notes (BAN)

Notes issued by states and municipalities to obtain interim financing for projects that will eventually be funded long term through the sale of a bond issue.

Subscribe to the Term of the Day via email Get the Term of the Day in your inbox!

Create your free portfolio