Relationships between categorical variables

In this video you’ll learn how to plot data on two categorical variables so that you can look for relationships between them.

After you’ve watched this video, you should be able to answer these questions
•We distinguished between an outcome variable and predictor variables. What is an outcome variable and what are predictor variables?
•What are the strengths and weaknesses of using separate bar graphs of a response variable for each predictor group?
•What are the strengths and weaknesses of using side-by-side bar graphs to show the relationship between a response variable and a predictor variable?
•Which type of graph should you look at?
•In terms of separate bar graphs for each predictor group, what would you expect to see if there was no relationship between the outcome variable and the predictor variable?
•What are you looking for when you use side by side bar charts?

[marcohalomoan]

How to quantify the relationship, e.g. which variable has bigger relationship?