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Level 22 · ◆◆◆ · ~13 min

The Central Limit Theorem & Standard Error

The Central Limit Theorem & Standard Error

"Why the sample average is a good estimate — and exactly how good."

sampling distributioncentral limit theoremSE of the mean = SD/√nthe √n law
🚀 You're jumping ahead. This builds on Samples, Populations & Bias — but play it now and you'll still earn full XP. If it feels steep, those make a gentler on-ramp.

A short lesson, then a quiz. ❤️×3 — a wrong answer costs a heart; finish with at least one left and the level is yours. Lose all three and you'll have to try again. Replay any time — XP and cleared levels are never lost.