Biology 2244A/B Chapter Notes - Chapter 3: Frequentist Probability, Sample Space, Conditional Probability
15 Mar 2015
School
Department
Course
Professor
Document Summary
Notation for probabilities: p denotes a probability, a, b, c denote specific events, p (a) denotes the probability of event a occurring. Rule 1: relative frequency approximation of probability: conduct (or observe) a procedure and count the number of times that event a actually occurs. P ( a )= number of a occured number of trial was repeated. P ( a )= number of ways a canoccur number of different simple events. Law of large numbers: procedure is repeated again and again, relative frequency probability of an event tends to approach the actual probability, complement of event a, denoted by. A , consist of all outcomes in which event a does not. Probability that either event a occurs or event b occurs (or they both occur) as a single outcome of a. Disjoint: any event combining two or more simple events.
