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Psychology (3,455)
PSY201H1 (61)
Lecture 6

# Lecture 6

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School
University of Toronto St. George
Department
Psychology
Course
PSY201H1
Professor
Gillian Rowe
Semester
Fall

Description
PSY220LECTURE 6 Chapter 6 Probability Introduction to ProbabilityWere concerned with probability for two main reasons its the basis for the normal curve and it is the foundation for inferential statisticsWhy y The normal curve helps us understand any possible outcome ex score on a test y In statistics probability is the basis for determining how confident we are that a particular outcomefinding may not have occurred by chance aloneProbabilityProbability is a method for measuring and quantifying the likelihood of obtaining a specific sample from a specific population We define probability as a fraction or a proportionany probability question can be restated as a proportion question The probability of any specific outcome is determined by a ratio comparing the frequency of occurrence for that outcome relative to the total number of possible outcomes Probabilitynumber of possible events of interestnumber of all possible events Ex if four Scrabble tiles with the
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