Lab 12

We will use the mtcars data set to explore how to deal with Dummy variables.

We will be interested in three of the variables mpg, hp, and am.

1. Start by plotting the data, find a way to visualize the am variable alongside mpg and hp.

2. Fit the simple linear regression model where \(Y\) is mpg, \(X\) is hp. Plot the fitted line along with the data.

3. Fit the multiple linear regression model where both hp and am is included as predictors. Plot the regression lines for am == 0 and am == 1.