Stat 145
Intro Biostatistics
Fall 2020

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Materials From Class – Fall 2020

Here is where you can find things used, handed out, or mentioned in class.

R Examples

I’m working on collecting a bunch of R examples. This list and organization will likely evolve over the course of the semester.

Gradescope

• Gradescope: https://www.gradescope.com/
• Combine documents into single PDF: https://combinepdf.com/

Worksheets, etc.

Date	Materials
10/23	Confidence Intervals and p-values: [HTML] [PDF]
10/23	Hypothesis tests for 1 mean: [HTML] [PDF]
10/20	Resampling within Groups
10/19	CIs for differences [HTML] [PDF]
10/19	Little Survey
10/16	Do Confidence Intervals Work? by Chris Wild (U Auckland)
10/13	Chris Wild Introduces the Bootstrap
10/13	Creating a Bootstrap distribution in R [HTML] [PDF]
10/12	Hypothesis Tests and Estimation [HTML] [PDF]
10/7	Probability and Biology: [HTML] [PDF]
10/5	Probability
9/29	More Hypothesis Tests: [HTML][PDF]
9/28	Whickham Study: [slides]
9/25	Null Distributions and Normal Distributions: [HTML] [PDF]
9/23	Four Steps of Hypothesis Testing: [HTML] [PDF]
9/23	Designing Hypothesis Tests: [HTML] [PDF]
9/22	Regression: Predictions and Residuals: [HTML] [PDF] [Solutions]
9/22	Exploring Linear Regression App
9/18	Testing for a difference in Proportions: [HTML] [PDF]
9/17	Malaria Vaccine Case Study: [HTML] [PDF]
9/15	Regression Lines: [HTML] [PDF]
9/14	Malaria Vaccine Case Study: [HTML] [PDF]
9/11	Self-Quiz 1
9/9	Summarizing Categorical Data: [HTML] [PDF]
9/8	Summarizing Exercise: [HTML] [PDF]
9/8	Correlation Guessing Game
9/7	Intro to RStudio and R Markdown slides
9/2	Data and Studies
9/2	Some comments on the distinctions

Some Tutorials

• Exploring data with plots (all in one tutorial)

  • Part A (Births) - We went through this part in class.
  • Part B (NHANES) – This will give you a chance to try things with a different data set and lots of specific direction.
  • Part C (more practice) – This will let you explore on your own and introduce a few more “extras”.

• ggformula – Intro

  • also available in RStudio using learnr::run_tutorial("introduction", package = "ggformula")

• ggformula – Refining plots

  • also available in RStudio using learnr::run_tutorial("refining", package = "ggformula")

R & RStudio

• Calvin’s RStudio server

  • Login with your usual Calvin username and password.

• Mathematics in R Markdown

  • Math notation in R Markdown files
  • A short video by Professor Scofield

• RStudio Getting Started Videos by Nick Horton at Amherst. (Note: you will need to use the Calvin RStudio address rather than the one for Amherst students.)

• RStudio’s web site

  • Cheat Sheets
  • More about R Markdown

Articles

• Malaria Vaccine Study

• Helper/Hinderer article (Nature, 2007).

  • example videos from the study

• How to Communicate Statistical Findings (Jane E. Miller)

Other Materials from Class

• Sampling Distributions

  • applet from onlinestatsbook.com
  • StatKey Sampling Distributions (proportion)
  • StatKey Sampling Distributions (mean)

• COVID-test perfomance from FDA