O'Reilly logo

Using Statistics for Better Business Decisions by Bert G. Wachsmuth, Justin Bateh

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 7

Association Between Categorical Variables

Preview: When studying statistics, it can be important to understand the association, if any, between two categorical variables. To investigate this, we create a two-dimensional table where one variable defines the columns and the second the rows. Such tables are called contingency tables. We then compare the actual entries in the table with those entries that would result under the assumption that there was no association between the two variables. Then we check the combined relative difference between the actual and expected values. If this difference is small, we were correct in assuming no relation, but if the difference is large, the variables must be related. We formalize this idea into ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required