Exercise

# Refresher: sum of squared residuals

Let's remind you how to compute the sum of squared residuals. You'll do this for two models.

Instructions 1/2

**undefined XP**

- Use the appropriate function to get a dataframe with the residuals for
`model_price_2`

. - Add a new column of squared residuals called
`sq_residuals`

. - Then summarize
`sq_residuals`

with their sum. Call this sum`sum_sq_residuals`

.