SOCY 211 Chapter Notes - Chapter 4: Product Rule, Bernoulli Trial, Binomial Distribution

• School: Queen's University
• Department: Social Sci, Edu and Soc Work - Sociology
• Course: SOCY 211
• Professor: Bill Nelson

Document Summary

Sample space: the list of all possible outcomes for a random trial; ex: in bingo, the sample space is a list of all 75 balls. Ex: looking at rolling a single die, looking at occurrences of getting a 1. Sample space: any of the numbers that could come up (s=(1,2,3,4,5,6) Event: (cid:494)a(cid:495) for a (cid:494)(cid:883)(cid:495) a=(cid:523)(cid:883)(cid:524) be repeated many times. Probability is the frequency of an event(cid:495)s occurrence if the random trial would. Probability of a (rolling 1 on a dice): P(a) = 1/6 (because there are 6 possible numbers for the dice to fall on: randomness lays foundation for probability, and therefore for statistical inference. Ex: rolling a single die: s = (1,2,3,4,5,6) space for random trial is same as for random variable. If you have two events and they are mutually exclusive (meaning if one can happen then the other cannot happen), then the probability of one or the other is simply their sum.