Research
What computing the mathematics turns up that copying it does not. Every finding here shows its derivation, so you can check the claim rather than trust it.
Findings
Open data
Every house edge this site computes is published as edges.json and edges.csv — exact fractions, the deriving page for each figure, CC-BY. Reuse it; link the page the number comes from. The methodology page explains what is derived, what is attributed, and what we refuse to guess at.