MAT 121 Lecture Notes - Lecture 5: Sample Space
9 Oct 2014
School
Department
Course
Professor
Document Summary
Mat 121: elementary statistics and probability- lecture 5: box plot, rare event. 5 number summary: these include 5 quantitates:, minimum, q1, q2, q3, maximum! *note that the whiskers do not have to be equal lengths. If they are not, this denotes unusual distribution*! Consider this, a single die (6-sided) is rolled. Simple event= rolling a single number (i. e. 1or 2or 3or )! Event= rolling a number larger than 3 (i. e. 4,5,6)! Sample space= 1,2,3,4,5,6: events are denoted by a,b,c , probability is the measure of how likely a is, and is denoted by p(a)! Relative frequency approximation of probability: if an experiment is repeated "n" times and an event a happens "s" time use the equation -> p(a) s/n! Classical approach to probability: each outcome has an equal chance of occurring, then the probability of an event is. P(a)= (number of outcomes a) / (total number of outcomes)! *note that probability can never be above 1*!
