Videos and lessons to help High School students learn how to calculate the expected value of a random variable; interpret it as the mean of the probability distribution.

Common Core: HSS-MD.A.2

Related Topics:

Common
Core (Statistics & Probability)

Common Core
for Mathematics

Comprehensive Online Statistics Lessons

Expected Value: E(X)

Expected value of a random variable.

Statistics and Probability : Expected Value of a Random Variable

Computing the expected value of a random variable X.

Expected value discrete random variable

In this video you learn how to find the expected value of a discrete random variable. This one is the number of dots on a die.

Expected Value and Variance of Discrete Random Variables

An introduction to the concept of the expected value of a discrete random variable. I also look at the variance of a discrete random variable. The formulas are introduced, explained, and an example is worked through.

Mean & Expected Value - Probability

A simple explanation of the mean and expected value of a discrete random variable.

Mean and Expected Value of Discrete Random Variables.

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget which allows your to practice solving Algebra, Trigonometry, Calculus and other math topics.

You can use the Mathway widget below to practice Statistics or other math topics. Try the given examples, or type in your own problem. Then click "Answer" to check your answer.