Population and sample
What the number you have is a number *about*, and the gap between the group you measured and the group you want to talk about.
We mark it against a checklist you can read first
What counts as knowing this
State precisely which population a figure supports a claim about, and which it does not
A check for this one skill
Up to 2 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