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Unformatted text preview: Chapter 5 Discrete Probability Distributions Random Variables Random variables explain experimental outcomes using numerical values Discrete Random Variables A discrete random variable is a random variable that can have either a finite or infinite number of values Continuous Random Variables A continuous random variable is one that assumes a numerical value in an interval or collection of intervals Discrete Probability Distributions A probability distribution for a random variable explains how probabilities are spread out over the values of the random variable The probability distribution is defined by a probability function , f(x), which provides the probability for each value of the random variable Using a random variable and its probability distribution, it is relatively easy to determine the probability of a variety of events A discrete probability function requires that f(x) 0 and f(x) = 1 A discrete probability distribution given by a formula is the discrete uniform...
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This note was uploaded on 04/07/2008 for the course ECO 145 taught by Professor Thornton during the Fall '07 term at Lehigh University .
 Fall '07
 Thornton

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