Chapter 9
Probability and Variability
By Boundless
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A random variable
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Probability distributions for discrete random variables can be displayed as a formula, in a table, or in a graph.
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The expected value of a random variable is the weighted average of all possible values that this random variable can take on.
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The binomial distribution is a discrete probability distribution of the successes in a sequence of
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This chapter explores Bernoulli experiments and the probability distributions of binomial random variables.
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In this section, we'll examine the mean, variance, and standard deviation of the binomial distribution.
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In this section, we'll look at the median, mode, and covariance of the binomial distribution.
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The Poisson random variable is a discrete random variable that counts the number of times a certain event will occur in a specific interval.
A hypergeometric random variable is a discrete random variable characterized by a fixed number of trials with differing probabilities of success.