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A random variable that can take only a certain specified set of individual possible values-for example, the positive integers 1, 2, 3, . . . For example, stock prices are discrete random variables ...
NICK LORD, Discrete random variables having equal mean and variance, The Mathematical Gazette, Vol. 98, No. 542 (July 2014), pp. 347-349 ...
Apply arithmetic mean of frequency distribution to find the expected value of a random variable The expected value of discrete random variable as summation of product of discrete random variable ...
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