I built a free biostats trainer that quizzes you right when you're about to forget — 50 cases, 1,000 questions
I'm a biostats researcher, and every few years I'd notice the same pattern in myself and in people I taught: you learn this stuff once for an exam or a paper, then six months later you can't remember which test handles paired ordinal data, or what a confidence interval actually means vs. what you tell yourself it means.
So I built BioStat Quest — a case-based trainer that runs on spaced repetition. 50 cases, each wrapped around a realistic scenario (an ER triage audit, a clinical trial, a genetics study), with ~20 questions per case that drill the concept from different angles. When you get something wrong — or even when you get it right but shakily — the scheduler (FSRS-6, the same algorithm Anki uses) decides when to show it to you again.
Fast-forward a few weeks and the things you actually struggle with show up more often than the things you know cold.
What's different from most stats courses / YouTube series:
- It's active, not passive. You're answering board-style MCQs, not watching.
- It tracks your forgetting curve, not a fixed syllabus.
- Every wrong answer opens a "deep dive" that explains the concept, not just the right letter.
Who it's for: residents, MPH students, early-career researchers, anyone who needs biostats to stick.
Free, no signup required to play the first handful of cases. It runs in the browser — no install.
I'd love feedback, especially on question quality and places where the explanations are unclear. There's a report button on every question.