Predictable Pairs: Association in Two-Way Tables
The results of a survey might provide lots of information on characteristics of students at your school, such as what proportion eat breakfast regularly, like first-period classes, have a job, or own a car. Does a “yes” response to one of these characteristics help us predict what the response of that same person will be to another characteristic? Is a person who eats breakfast likely to have an early class? Is a person who has a job likely to own a car? Looking for associations between categorical variables is an important part of the analysis of frequency data. How to begin the process of measuring association is the subject of this lesson.
KeywordsHeart Attack Soft Drink Hand Dominance Egorical Variable Marginal Information
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