ViewTube

Until now E[X] came in two flavours: a sum for discrete variables, an integral for continuous ones. Two definitions for one idea.

Why does a staircase of binomial probabilities begin to look like a bell curve? This concise explainer shows how standardized ...

Heads, step right. Tails, step left. The simplest model of all — and despite the simplicity, it hides some of the most surprising ...