COMM 215 Lecture Notes - Lecture 4: Sample Space, Frequentist Probability
Document Summary
Probability: the chance that a particular event will occur. The value will be between 0 and 1. Experiment: a process that produces a single outcome whose result cannot be predicted with certainty. Sample space: the collection of all outcomes that can result from a selection, decision or experiment. Tree diagram: useful way to de ne the sample space. How to construct a tree diagram: de ne the experiment, de ne the outcomes, de ne the sample space. Event of interest: a collection of experimental outcomes. De ne the experiment, list the outcomes associated with one trial of the experiment, de ne the sample space, de ne the event of interest. Mutually exclusive events: two events are mutually exclusive if the occurrence of one event precludes the occurrence of the other event. Independent events: two events are independent if the occurrence of one event in no way in uences the probability of the occurrence of the other event.
