Unformatted text preview: E(X – EX) 2 Σ(xEX) 2 f(x) o σ 2 = EX 2 – (EX) 2 = Σx 2 f(x) – (Σxf(x)) 2 book keeping function o cumulative probability function – probability of finding a value less than the one you want o F(x) = P(X≤x) o Σf(z) for z ≤ x Mathematically determined probability o Binomial probability o x ~ binomial (n,p) where n is the number of trials and p is the probability of success with one trial i.e. roll a die 5 times • x ~ binomial(5, 1/6) • P(x=4) = (1/6) 4 (5/6) 2 (6 choose 4)...
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This note was uploaded on 04/07/2008 for the course MATH 226 taught by Professor Daepp during the Fall '07 term at Bucknell.
 Fall '07
 Daepp
 Math, Real Numbers

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