Correlation and cause
Confounding, reverse causation and coincidence — and the specific question to ask of any claim that one thing drove another.
We mark it against a checklist you can read first
What counts as knowing this
Name a plausible confounder for a causal claim and say what evidence would rule it out
A check for this one skill
Up to 3 questions on this skill alone, marked against the bar beside this. It stops as soon as the answer is clear. No account, and your answers are not kept.
You'll need these first
What it unlocks
Start on Statistics & Data Literacy
Every skill above, ordered by what depends on what, with the projects above that as the evidence you actually did it. We work out where you already are first, so the path skips what you can do.
Start this path