Statistics

Probability, inference, and the intuitions behind the math.

ProbabilityInferenceData Mining

Three doors, one car. The host opens a goat. Should you switch?

In a room of just 23 people, it's a coin-flip that two share a birthday.

One treatment beats the other for small stones AND for large stones — yet loses overall. Same numbers. Watch it flip.

A test that's right 99% of the time says you're sick. Most people who hear that are perfectly fine. Here's the trick your gut keeps missing.