Section5-2 - Random Variable Probability Distribution A...

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Random Variable & Probability Distribution A. Bourhim Syracuse University MAT121, Spring 2015 A. Bourhim (Syracuse University) Random Variable & Probability Distribution MAT121, Spring 2015 1 / 10
Other details, examples and the solution of the examples will be presented in the class. Your attendance is therefore required. 2 / 10
Definition Random variable is a variable, denoted by x , whose value is a numerical outcome. 1 A discrete random variable has a finite or countable number of values. These values are usually counts like the number of students in a class, .... 2 A continuous random variable takes all values in an interval of numbers. These values are usually measurements like height, weight, .... A probability distribution is a description that gives the probability for each value of the random variable; often expressed in the format of a graph, table, or formula.

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