PSYB07H3 Lecture Notes - Lecture 5: Pretz, Venn Diagram, Conditional Probability
Document Summary
Probability can be expressed in 0-1 or 0%-100% P(event)=0 means event never occurred, p(event)=0. 5 (50% event occurred), p(event) 1 (100% event occurred) Increases the probability of individual"s prediction to meet their result. View where we look at long running situation and review outcome calculated. Looking at actual possibility of possible outcome and look at the probability of event. Probability of event = # of event/# of possible outcomes. Additive rule: adding probability of two things together. When using included additive rule must be mutual exclusive event. Anytime overlap between set so that they are not mutually exclusive it can be subtracted. General additive rule: probability of each event minus overlap. Compliment rule: probability of event a + probability of event not a = 1 (exhaustive) also probability of event not. The more info. you want the less likely it will occur. We can use multiplicative rule (with replacement) Conditions are present that change the probability of events to occur.
