PSYC 2021 Lecture Notes - Lecture 6: Statistical Inference, Binomial Distribution, Frequency Distribution

• School: York University
• Department: Psychology
• Course: PSYC 2021
• Professor: Alistair Mapp

Document Summary

For a situaion in which several diferent outcomes are possible, the probability for any speciic outcome is deined as a fracion or a proporion of all the possible outcomes. If the possible outcomes are ideniied as a, b, c, d and so on, then the. Probability of a= total number of possible outcomes. Probability establishes a connecion between samples and populaions. Probability predicts what kind of samples are likely to be obtained from the populaion. e. g if you are selecing a card from the deck. A deck of cards has 52 possible outcomes. The probability of selecing a king of hearts is p=1/52 the probability of selecing an ace is p=4/52 because there are 4 aces in the deck. The probability of a speciic outcome is classiied as p. e. g p(king) p(heads) Can be stated as what proporion of the deck consists of kings answer will be the same as p. Probability values are most oten expresses as decimal values.