University of California, Berkeley: Philip Stark's SticiGui: "Chapter 20: Random Variables and Discrete Distributions"
This is an optional reading. Chapter 20 will provide information on random variables and discrete distributions. Read through this chapter if you would like to experience the entire course as it was presented at University of California, Berkeley. There are several exercises and Java applets embedded in the text that are meant to further reinforce your learning. Do not skip these exercises! For instructions on how to navigate these exercises, see "Special Instructions on SticiGui Exercises and Java Applets” in the "Course Information” section above.