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Expected Value


Video lessons with examples and solutions 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.



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.



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