Now that you've got a good sense of how to "speak" R ... graph in Figure 1, but without the regression line which will be added shortly. [Click on image for larger view.] Figure 1. Predicting Income ...

In this short course we will provide an introduction to linear regression and how to utilize it in R. We will cover the theory of linear regression as well as demonstrating how to use R to make and ...

To add a regression line, choose "Add Chart Element" from the "Chart Design" menu. In the dialog box, select "Trendline" and then "Linear Trendline." To add the R 2 value, select "More Trendline ...