PSY-0031 Lecture Notes - Lecture 4: Elementary Event, Sample Space
1 Feb 2017
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Document Summary
Something that happens (also called an outcome) An occurrence or set of occurrences where events can happen with some probability, e. g: E. g, the probability that it will rain on tuesday and friday this week or ) - all possible outcomes of a defined experiment. An event that can only happen one specific way ( s. E. g, the probability that it will rain on any two days this week ( ) - the probability of event a or event b happening. Intersection ( ) - the probability of event a and event b happening. Non-negativity of an event is a non-negative real number. The sum of the probabilities of all possible elementary events in a sample space = 1. Finite additivity probabilities of each event (a) + p (a b) = p. The probability of independent events occurring equals the sum of the (b) for all a, b s where a b = not 0.
