Exercise

# Adding categorical to the auto performance model

Now you'll include categorical variables in your model. Categories are inherently linear, so you'll model them as linear terms.

Instructions

**100 XP**

- Fit a GAM to the
`mpg`

data, modeling`city.mpg`

as a sum of smooth functions of`weight`

,`length`

, and`price`

, and also include the categorical terms`fuel`

,`drive`

, and`style`

. - Use the
`plot()`

function provided to visualize the model.