# Week 2: Conditional Probability and Random Variables

## Reading

- Blitzstein and Hwang: Chapters 2 and 3
- Hansen (Intro): Chapter 2
- 3Blue1Brown: The medical test paradox: Can redesigning Bayes rule help? (optional, but possibly helpful)

## Assignments

- Problem Set 1 is due February 3 at 11:59pm ET.
- Problem Set 2 is due February 10 at 11:59pm ET.

## Slides and notes

We’ll start the week finishing up conditional probability and then move onto random variables:

- Conditional Probability: Slides | Handout
- Board Notes (M 2/1)
- Random Variables: Slides | Handout
- Board Notes (W 2/3)

## Videos

- Zoom Video Links (behind Harvard login)