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Level 12
· ◆◆ · ~12 min
The Normal Curve & the 68-95-99.7 Rule
The Normal Curve & the 68-95-99.7 Rule
"One bell-shaped curve, three numbers to memorize, endless mileage."
the normal curve68-95-99.7 rulearea = proportionsymmetry
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.