In probability theory, the expected value (also called expectation, expectancy, expectation operator, mathematical expectation, mean, expectation value, or first moment) is a …

The expected value in statistics is the long-run average outcome of a random variable based on its possible outcomes and their respective probabilities. Essentially, if an experiment (like a …

Nov 14, 2025 · Expected value, in general, the value that is most likely the result of the next repeated trial of a statistical experiment. The probability of all possible outcomes is factored …

Oct 3, 2025 · In mathematics, the expected value (also known as the mean, expectation, or average) of a random variable is a measure of the central tendency or average outcome of that …

Expected value is a measure of central tendency; a value for which the results will tend to. When a probability distribution is normal, a plurality of the outcomes will be close to the expected …

Definition (informal) The expected value of a random variable is the weighted average of the values that can take on, where each possible value is weighted by its respective probability.

Expected value is exactly what you might think it means intuitively: the return you can expect for some kind of action, like how many questions you might get right if you guess on a multiple …

Jun 23, 2025 · In investing, expected value provides a valuable tool for decision-making under uncertainty. Expected value (EV) is a term used by those in the investment industry to denote …

Jan 2, 2025 · These outcome values are used to find the expected value of an experiment: the mean of the values associated with the outcomes that we would observe over a large number …

Expected value is perhaps the most useful probability concept we will discuss. It has many applications, from insurance policies to making financial decisions, and it’s…