This recipe demonstrates how to conduct linear regression analysis on the SLID dataset. First, we load the SLID data and display its structure through the use of the str function. From the structure of the data, we know that there are four independent variables that will affect the wages of the dependent variable.
Next, we explore the relationship of each independent variable to the dependent variable, wages, through visualization; the visualization result is shown in the preceding screenshot (step 2). In the upper-left section of this screenshot, you can find the box plot of three different languages against wages; the correlation between the languages and wages is not obvious. The upper-right section of the screenshot shows ...
