elemprob-fall2010-page5 - times the number of heads minus...

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X is an example of what is called a random variable. A random variable is a function from Ω to the real numbers. It is a discrete random variable if there are only countably many values x i such that P ( X = x i ) 6 = 0. If we toss a coin 6 times, the number of heads is a random variable, 3
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Unformatted text preview: times the number of heads minus the number of tails is a random variable, etc. If we play roulette, the number that shows up is a random variable, letting X equal 1 if red shows and 0 otherwise, etc. are random variables. 5...
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This note was uploaded on 12/29/2011 for the course MATH 316 taught by Professor Ansan during the Spring '10 term at SUNY Stony Brook.

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