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===Central Limit Theorem=== | ===Central Limit Theorem=== | ||
Very very important. Never forget this.<br> | Very very important. Never forget this.<br> | ||
For any distribution, the sample mean converges in distribution to normal. | For any distribution, the sample mean converges in distribution to normal.<br> | ||
Let <math>\mu = E(x)</math> and <math>\sigma^2 = Var(x)</math><br> | Let <math>\mu = E(x)</math> and <math>\sigma^2 = Var(x)</math><br> | ||
Different ways of saying the same thing: | Different ways of saying the same thing: |