Categorical Variables: Categorical variables are types of variables that represent qualitative characteristics or attributes. They divide observations into distinct groups or categories.
Two-Way Tables: Two-way tables are used to organize categorical data by displaying it in rows and columns. They provide a way to analyze relationships between two categorical variables by showing frequencies or percentages in each cell.
Scatterplots: Scatterplots are graphical representations of bivariate data, where each point on the plot represents an observation with its corresponding values for both variables. They help visualize patterns and relationships between the two variables.