Columbia University
Columbia University: Expected Value Pdf
A PDF explaining and giving examples to show how the expected value of a random variable indicates its weighted average.
NC State University
Nc State University: 4.2 (Cont.) Expected Value of a Discrete Random Variable
A PowerPoint explaining and showing examples of how to measure the mean of the values of a random variable.
University of Glasgow
Steps Statistics Glossary: Random Variables and Probability Distributions
This section of the Statistics Glossary offers definitions of terms having to do with random variables and probability distributions such as expected value and normal distribution.
Illustrative Mathematics
Illustrative Mathematics: S Md.2, 5 Sounds Really Good! (Sort Of)
A friend of yours, Phil, writes to you asking about a new scratch-off lottery game. It costs $10 to play this game. There are two outcomes for the game (win, lose) and the probability that a player wins a game is 60%. A win results in...
University of Glasgow
Steps Statistics Glossary: Normal Distribution
Overview of normal distribution, including the normal distribution model, the probability density function, and standard normal distribution. The parameters for "normal" distribution are provided.