COMM 215 Lecture Notes - Lecture 4: Sample Space
22 Jan 2017
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Document Summary
Chance that an event occurs, from 0 to 1. Produces 1 outcome, result can"t be predicted w/ certainty. Collection of experimental outcomes: define experiment (result of coin toss, list outcomes associated w/ one trial (heads, tails, define sample space ( e, define event of interest (at least 1 heads - e = {e1, e2} ) e. Mutually exclusive: occurrence of one event precludes occurrence of other event (e. g. single dice roll - if you get 1 you can"t get 6) Independent: occurrence of event 1 does not affect probability of occurrence of event 2 (e. g. if i flip a coin and get heads, this doesn"t change the likelihood of getting heads on my second coin flip) Dependent: occurrence of one event impacts occurrence of other (likelihood of getting a job as a lawyer is affected by whether i got good grades in law school) Classical probability assessment number of ways outcome of interest can occur total possible # of outcomes.
