# Random variables

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Constructing probability distributions

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Probability models

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Expected value

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Expected value with empirical probabilities

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Expected value with calculated probabilities

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Making decisions with expected values

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**Random variables**with these 10 questions.About this unit

Random variables can be any outcomes from some chance process, like how many heads will occur in a series of 20 flips. We calculate probabilities of random variables and calculate expected value for different types of random variables.