So you have numeric data that you’d like to display visually. Question: What do you want to display?
DISTRIBUTION OF SINGLE VARIABLE
You want to visually display the distribution of a single numeric variable.
Example: You want to visually display the distribution of students’ ages at a community college.
You want to display the relationship of a numeric variable with another numeric variable.
Example: You want to visually display the relationship between people’s heights and weights.
NUMERIC VARIABLE BY CATEGORIES
You want to display a numeric variable across different levels of a categorical variable.
Example: You want to visually display the distribution of heights for men vs. women.