How to Draw Graphs for One Continuous and One Categorical Variable? | Stata Tutorials Topic 12
Stata Tutorials Topic 12: Graphs for One Continuous and One Categorical Variable
Please download the course dataset for this video:
https://drive.google.com/file/d/1QZt_...
Hi, I am Bob. In Module 1, we learned to draw histograms and box plots for a continuous variable.
Today, let’s explore the distribution of a continuous variable for each category of a categorical variable. In
other words, we will draw graphs for one continuous variable and one categorical variable. For example, we
may want to find out how workers’ hourly wages are distributed across different levels of education. Here
the wage variable is continuous, and the education variable is categorical. In Stata, the “over” and “by”
options can be used with many graph commands to show the plots by groups.
The Stata commands in this video:
*use the course dataset
use "/Users/bobwen/Documents/10. Alison/Datasets/bob.dta", clear
*Histograms by groups
histogram hwage, by(educ)
*Box plots by groups
graph box hwage, over(educ) nooutsides
graph box hwage, by(educ) nooutsides
graph box hwage, over(gender) over(educ) nooutsides
*Bar charts by groups
graph bar (mean) hwage, over(educ)
graph bar (mean) hwage, by(educ)
graph bar (median) hwage, over(educ)
graph bar (median) hwage, over(gender) over(educ)
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