Contingency table review
In this chapter you'll continue working with the comics dataset introduced in the video. This is a collection of characteristics on all of the superheroes created by Marvel and DC comics in the last 80 years.
Let's start by creating a contingency table, which is a useful way to represent the total counts of observations that fall into each combination of the levels of categorical variables.
This exercise is part of the course
Exploratory Data Analysis in R
Exercise instructions
The dataset has been loaded into your workspace as comics.
- Type the name of the dataset to look at the rows and columns of the dataset.
- View the
levels()that thealignvariable can take. - View the
levels()that thegendervariable can take. - Create a contingency table of the same two variables.
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Print the comics data
# Check levels of align
levels(___$___)
# Check the levels of gender
# Create a 2-way contingency table