Week 10

Simple Linear Regression and Nonparametric tests

Exam retakes

• Retakes for Exams 1 & 2 will be in class on Wed, Nov 29th
  • Exam question topics for retakes (resource on Sakai)
• Retake for Exam 3 will be on Fri, Dec 12th; time & place TBD

Day 16

• Simple Linear Regression Part 2
• Sections 6.3-6.4
• Recording: in class Webex recording only

Slides

• html
• pdf
• Slides with notes
• webpage
• Code file: qmd, html

Datasets

All datasets can be found on GitHub

• lifeexp_femlit_water_2011.csv

Class discussion

Class discussion Google doc link

Day 17

• Nonparametric tests
• This material is not in our textbook. Please see Chapter 13: Nonparametric tests of Pagano’s Principles of Biostatistics, 2022 edition as a supplementary resource.
  • This chapter can be downloaded from the OHSU library’s eBook at https://ebookcentral.proquest.com/lib/ohsu/detail.action?docID=6950388&pq-origsite=primo

Slides

• pdf
• Slides with notes
• Code file: qmd, html
  • 12/2/23: Updates made to code file for creating ranks using R’s rank() function that has an option ties.method to specify how to calculate ties.
  • Search “New:” for updates made.
  • Updates are not in the slides.

Datasets

All datasets can be found on GitHub

• No datasets needed for Day 17

Class discussion

Class discussion Google doc link

• Work on HW 9

Homework

• HW 9 due on Mon, 12/4
  • Datasets
    • Gapminder_2011_LifeExp_CO2.csv
    • chol213.csv (from Day 10 Part 2)
    • CaffeineTaps.csv (from Day 11)
  • Covers Days 16-17
  • For book exercises, make sure to include all steps in a hypothesis test (where applicable) as outlined in the class notes.
  • Do not forget to include a discussion on whether you think the test conditions have been satisfied. Are there assumptions you need to make in order for them to be satisfied? Whether you believe they are satisfied or not, continue to run the hypothesis test as instructed.

Recordings

• Pre-recorded lessons are on Echo Cloud (aka echo 360 or echo video).
  • These can be accessed in Sakai by navigating to the BSTA 511/611 page and clicking on the Echo Cloud option in the left-side menu.
  • This will redirect you to an echo video page with a list of pre-recorded videos.
• In-class recording links are on Sakai. Navigate to Course Materials -> Schedule with links to in-class recordings. Note that the password to the recordings is at the top of the page.