Statistics: Probability 2.5 / 5 based on 3 ratings ? MathematicsStatistics, averages and distributionsA2/A-levelOCR Created by: Ruth NyeCreated on: 08-03-13 11:29 A given B P(A/B)=P(A˄B)/P(B) 1 of 5 and, or, ' P(A˄B) = P(A x B), P(A˅B)= P(A+B), P(A')=1-P(A) 2 of 5 Arrangements and Combinations Arrangements: n!, Permutations: nPr, Combinations: nCr = n!/r!(n-r)! 3 of 5 Discrete Random Variables Sum of P: ∑P(x=r)=1, Expectation: ∑rP(x=r), Variance: V(x)=E(x^2)-[E(x)]^2 4 of 5 Different types of probability Interpendant: Don't effect each other 5 of 5
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