Lab 05

Expanding multiple linear regression

Feb 27, 2026

Welcome

Today’s lab

  • Mid-semester survey
  • Lab 05: Expanding multiple linear regression

Mid-semester feedback

  • Purpose: To give the teaching team feedback on what is working well (or not as well) in helping you learn the course content

  • The feedback is anonymous

  • Please take a few minutes to fill it out during lab today

The teaching team appreciates your feedback!

🔗 https://duke.qualtrics.com/jfe/form/SV_8l7HtpcwUODh93g

Lab 05: Expanding multiple linear regression

This lab focuses on

  • modeling complex data using variable transformations, categorical predictors and interactions, and various model specifications.

  • evaluating model diagnostics and conditions.

🔗 sta221-sp26.github.io/labs/lab-05.html

Reminder: Tips for working on a team

  • Do not pressure each other to finish early; use the time wisely to really learn the material and produce a quality report.

  • The labs are structured to help you learn the steps of a data analysis. Do not split up the lab among the team members; work on it together in its entirety.

  • Everyone has something to contribute! Use the lab groups as an opportunity to share ideas and learn from each other.