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Statistics (266)
STAB22H3 (208)
Lecture

Lecture 24 Pre.pdf

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School
University of Toronto Scarborough
Department
Statistics
Course
STAB22H3
Professor
Michael Krashinsky
Semester
Fall

Description
Pre-Lecture Twenty Four ▯ Earlier in the course we looked at organizing data containing individuals as- signed to combinations of categories of two categorical variables into two way tables. ▯ In each cell was recorded the count of the number of individuals in the data set that fell into that combination of categories of the two categorical variables. ▯ We extracted information about the association (or lack of association) be- tween the two categorical variables by describing, among other things, condi- tional distributions between the two variables. ▯ It turns out that there is actually a test that we can perform to ▯nd evidence (or insu▯cient evidence) to reject the hypothesis that the two categorical variables are independent. ▯ Suppose that A is a categorical variable with a categories and B is a categorical variable with b categories, the hypotheses are: H 0 The two variables are independent.
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