Final answer:
Graphs and numerical summaries describe the distribution of categories and frequencies or proportions within each category for categorical variables.
Step-by-step explanation:
The key feature that graphs and numerical summaries describe for categorical variables is the distribution of the categories and the frequencies or proportions within each category.
Graphs provide a visual representation of the data, allowing you to see the distribution and patterns. For example, a bar graph can show the frequencies or proportions of each category, while a pie chart can show the percentages of each category in relation to the whole.
Numerical summaries, such as frequency tables or summary statistics, provide a concise summary of the data, including the counts, percentages, or other measures of each category.