Margin of Error Media
Margin of Error Media
Books and tools for people who want to think clearly about evidence, not just run formulas.
The Book
Margin of Error
Statistics for a World That Needs Better Decisions
Every chapter opens with a real story — the Flint water crisis, Facebook's mood experiment, the Bertrand–Mullainathan résumé audit. Twelve case studies, more than a dozen interactive tools, twelve downloadable datasets, and a chapter-by-chapter R companion that reproduces every analysis with verified numbers. Statistics taught as reasoning, not ritual.
Free to read online · Print: $69.99 · Kindle: $9.99
The Platform
AI Business Lens
The business of AI, for people who teach it or learn from it
A daily brief on how AI is changing the work of different fields — business, engineering, health, law, education, the sciences, and the arts. It reads only reporting that is not behind a paywall, keeps a handful of stories a day, and links every one to the original. Subscribers can turn a story into a discussion guide, an assignment, or a short case. A model picks the stories and writes the summaries, so read the original before you use anything.
Free to read, no account · Free account: three generations · Weekly email by field
Why This Book Is Different
Stories first, formulas second. Every chapter opens with a real case where the method changed what people believed. The tools serve the story, not the other way around.
Interactive tools you won’t find elsewhere. Purpose-built Shiny applications let you explore concepts by changing inputs and watching what happens. These are not animations — they are instruments you control.
Built for thinking, not memorizing. No prerequisite arms race. No formula sheets to cram. It teaches statistics as a mode of reasoning you will use long after the course ends.