We’re starting in on the second part of the unit today, about Probability Models. These are ways of listing/organizing all the outcomes of a random trial and their, often unequal, probabilities. This will be the basis for one of the most useful tools in statistics: the expected value.

## Today’s links

- Homework: HW 8.9 – Probability Models
- Notes: Writing probability models
- Lesson video 1: Constructing a probability model
- Lesson video 2: Verifying a discrete probability model as appropriate

## IXL Modules

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