Formulae: Unit 10 5.0 / 5 based on 3 ratings ? MathematicsProbabilityGCSEEdexcel Created by: annanolanCreated on: 02-01-17 09:48 How do you calculate probability? number of successful outcomes / total number of possible outcomes 1 of 15 What is a sample space diagram? A diagram that shows all the possible outcomes of two events 2 of 15 When are two events mutually exclusive? If they can't happen at the same time 3 of 15 When events are mutually exclusive, what is the probability of A and B P(A) + P(B) 4 of 15 What is the relative frequency of an outcome? Experimental probability 5 of 15 How do you calculate the experimental probability of an outcome? frequency of outcome / total number of trials 6 of 15 What is theoretical probability? Probability calculated without doing an experiment 7 of 15 What is a frequency tree? A diagram that shows two or more events and the number of times they occurred? 8 of 15 How do you find the probability of 2 events where one doesn't effect the other? P(A and B) = P(A) x P(B) 9 of 15 what is conditional probability? The probability of a dependent event, where the probability of the second outcome do ends on the first outcome 10 of 15 What does A ∩ B mean? 'A intersection B' - All the elements are in A and in B 11 of 15 What does A U B mean? 'A union B' - All elements are in A or B or both 12 of 15 What does A' mean? All elements not in A 13 of 15 What does All elements 14 of 15 What does P(A ∩ B | B) mean? probability of A and B given B 15 of 15
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