Simple explanations for the most common types of expected value formula. Includes video. Hundreds of statistics articles and vidoes. Free help. The expected value (or mean) of X, where X is a discrete random variable, is a weighted average of the possible values that X can take, each value being. In probability theory, the expected value of a random variable, intuitively, is the long-run average value of repetitions of the experiment it represents. For example Definition · General definition · Properties · Uses and applications.
The expected value Video