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# Unit 8: Random variables and probability distributions

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A random variable is some outcome from a chance process, like how many heads will occur in a series of 20 flips, or how many seconds it took someone to read this sentence. Calculate probabilities and expected value of random variables, and look at ways to ransform and combine random variables.

## Introduction to random variables and probability distributions

### Practice

#### Quiz 1

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## Mean and standard deviation of random variables

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#### Quiz 2

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## Combining random variables

#### Quiz 3

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## Parameters for a binomial distribution

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#### Quiz 4

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## The geometric distribution

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#### Quiz 5

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