Chapter_06 - Chapter 6 Two-Way Tables BPS - 5th Ed. Chapter...

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BPS - 5th Ed. Chapter 6 1 Chapter 6 Two-Way Tables
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BPS - 5th Ed. Chapter 6 2 In this chapter we will study the relationship between two categorical variables (variables whose values fall in groups or categories) . To analyze categorical data, use the counts or percents of individuals that fall into various categories. Categorical Variables
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BPS - 5th Ed. Chapter 6 3 When there are two categorical variables, the data are summarized in a two-way table each row in the table represents a value of the row variable each column of the table represents a value of the column variable The number of observations falling into each combination of categories is entered into each cell of the table Two-Way Table
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BPS - 5th Ed. Chapter 6 4 A distribution for a categorical variable tells how often each outcome occurred totaling the values in each row of the table gives the marginal distribution of the row variable (totals are written in the right margin) totaling the values in each column of the table gives the marginal distribution of the column variable (totals are written in the bottom margin) Marginal Distributions
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BPS - 5th Ed. Chapter 6 5 It is usually more informative to display each marginal distribution in terms of percents rather than counts each marginal total is divided by the table total to give the percents A bar graph could be used to graphically display marginal distributions for categorical variables Marginal Distributions
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BPS - 5th Ed. Chapter 6
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This note was uploaded on 08/27/2011 for the course MA 116 taught by Professor Muntheralraban during the Summer '11 term at Montgomery CC.

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Chapter_06 - Chapter 6 Two-Way Tables BPS - 5th Ed. Chapter...

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