Exploratory Data Analysis on Categorical Variables

Giorgio Garziano continues digging into earthquake data:

To understand relationship or dependencies among categorical variables, we take advantage of various types of tables and graphical methods. Also stratifying variables can be encompassed in order to highlight if the relationship between two primary variables is the same or different for all levels of the stratifying variable under consideration.

The contingency table are said to be of one-way flavor when involving just one categorical variable. They are said two-way when involving two categorical variables, and so on (N-way).

Read on for various techniques for data analysis against categorical variables.

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