Probability
Bet on Red 200 Times: Your Real Odds
Why averages settle down, and why everything becomes a bell curve.
What to remember
- LLN: sample means converge to true means because Var(X̄) = σ²/n → 0.
- CLT: standardized sums converge to N(0,1) regardless of the underlying shape.
- Standard error σ/√n: precision doubles only when sample size quadruples.
Read the lessonLLN & Central Limit Theorem, with a checkpoint at the end.