Chapter 6: Discrete Probability Distributions

1. 6.1 Discrete Random Variables
2. 6.2 The Binomial Probability Distribution

In Chapter 6, we expand on the probability concepts we learned in Chapter 5, and introduce the idea of a random variable. Random variables are useful because they help us determine if playing a game like roulette (shown to the right) is profitable in the long-term. (It isn't.)

Random variables also help us determine how insurance companies set the premiums for their policies. They can also help an investor decide whether or not to invest in a company.

In Section 6.2, we'll introduce a specific type of random variable called a binomial random variable. Binomial random variables will help us answer questions like "What's the probability of getting 3 questions right on a multiple choice test if we're just guessing?" Or "If a basketball player makes 80% of her free throws, how often will she make less than 8 of 10?"

If you're ready to begin, just click on the "start" link below, or one of the section links on the left.

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