COMM 215 Chapter Notes - Chapter 4: Random Variable, Statistical Inference, Standard Deviation
7 Apr 2017
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A random variable is a variable that assumes a numerical value determined by the outcome of an experiment, where one and only one numerical value is assigned to each experimental outcome. A random variable is assigned to each experimental outcome representing an uncertain numerical outcome. A satellite radio company assigns (cid:494)x" to denote the number of stereos that will be sold that week. random variable a discrete random variable can be a finite number of possible values or the. When the possible values of a random variable can be counted or listed, the variable is a discrete possible values can take the form of a countable sequence/list such as: (cid:882), (cid:883), (cid:884), (cid:885), (cid:886) . The number, out the 3 next customers coming into the store, who will buy something: here, x could be 0, 1, 2, or 3 countable & finite.
