Exercise

# Calculating the LOO estimate

Now let's practice using the `loo`

package on our Spotify model so that we can determine which model provides the best fit to our data. The `songs`

dataset is already loaded.

Instructions

**100 XP**

- Estimate a model predicting
`popularity`

from`song_age`

- Print the LOO approximation for this model with 1 predictor
- Estimate a model predicting
`popularity`

from`song_age`

,`artist_name`

, and their interaction - Print the LOO approximation for this model with 2 independent variables