Chapter 5 M5: Model evaluation
Now that we’re comfortable building linear regression models (and we have the math to back it up!), it’s time to start thinking about, well…whether that’s actually a good idea. In particular, in this module we’ll look at some techniques for model evaluation: measuring whether a model is useful and how well it’s doing its job.
Some of these sets of notes come with a “response moment.” You don’t need to write down your answers to these (unless they also show up on the pre-class questions assignment), but it’s good to take a minute or so to think about them – they are designed to help you check your own understanding of what you’ve just seen.