Is there a way in Stata to represent each groups regression line on a single graph?
Yes, you can graph & label the regression lines for each group. Here are the steps: 1) Run your regression 2) Predict a yhat value for the model by using the command: Syntax: predict varname Example: predict yhata 3) Separate the yhat values by your grouping variable Syntax: separate varname, by (grouping_IV) Example: separate yhata, by (ses) The Stata output that follows this command will show you that you have careated his new variables (one for each level of the grouping IV), named yhata1, yhata2, yhata3, etc….