StatlectThe Digital Textbook
Index > Glossary

Mean

The mean of a random variable is the weighted average of the values that the random variable can take, where each value is weighted by its respective probability.

Table of Contents

Synonyms

The term mean is a synonym of the terms expected value and expectation.

More details

The lecture entitled Expected value provides more details about the concept of mean.

Keep reading the glossary

Previous entry: Marginal probability mass function

Next entry: Mean squared error

The book

Most of the learning materials found on this website are now available in a traditional textbook format.