• mikeworkbook
  • Mike’s Workbook for Biostatistics
    • Disclaimers and copyright
    • Privacy Policy
  • Introduction Mike’s Workbook
  • R work
    • Basic R Command Reference
    • A quick look at R and R Commander
      • Part 01. Install R and Rcmdr
      • Part 02. Getting started with R and Rcmdr
      • Part 03. Explore use of R
        • Answers: Explore use of R
      • Part 04. Create functions in R
      • Part 05. R packages: Making R do more
      • Part 06. Work with an included dataset
      • Part 07. Working with your own data
      • Part 08. Data exploration
      • Part 09: Making a report
      • Part 10: Exiting R and Rcmdr
      • Optional: Modify Rprofile to change R startup
  • Biostatistics Homework
    • Homework 1: Project data life cycle
    • Homework 2A: Descriptive statistics
    • Homework 2B: Graphs
    • Homework 3: Distributions & Probability
    • Homework 4: Risk
    • Homework 5: Inference
    • Homework 6: Chi-square problems
    • Homework 7: t-tests and ANOVA
    • Homework 8: Multiway ANOVA
    • Homework 9: Common nonparametric tests
    • Homework 10: Correlation
    • Homework 11: Simple linear regression
    • Homework 12: Multiple linear regression
    • Answers to selected problems
      • Answers – Homework01
      • Answers — Hwk2A
      • Answers – Hwk2B
      • Answers: Distributions and probability
      • Answers: Risk
      • Answers: Inference
      • Answers: Chi-square problems
      • Answers: t-tests and ANOVA
      • Answers: Nonparametric tests
      • Answers: Multiway ANOVA
      • Answers: Correlation and simple linear regression
      • Answers: Multiple linear regression
  • Appendix
    • macos won’t let me run R
    • I installed R last year for a different class; What do I do now?
    • DrD, your R code does not work
    • How to enter and run R code
    • Help with imageJ
    • Help with R package digitize
    • FAQ about computers and R
    • Spreadsheets and data entry
    • Can’t copy/paste into R script, macOS
    • How to do a meta-analysis
      • Checklist — Basic meta-analysis
      • Checklist — Writing the Biostatistics write-up
      • Checklist — Video Abstract for Biostatistics

Answers to selected problems

Answers to selected problems

Answers: Explore

Assignment page Answers to odd numbered problems
Homework 1: Project data life cycle
Homework 2A: Descriptive statistics Answers — Hwk2A
Homework 2B: Graphs Answers – Hwk2B
Homework 3: Distributions & Probability Answers: Distributions and probability
Homework 4: Risk Answers: Risk
Homework 5: Inference Answers: Inference
Homework 6: Chi-square problems Answers: Chi-square problems
Homework 7: t-tests and ANOVA Answers: t-tests and ANOVA
Homework 8: Multiway ANOVA Answers: Multiway ANOVA
Homework 9: Common nonparametric tests Answers: Nonparametric tests
Homework 10: Correlation and simple linear regression Answers: Correlation and simple linear regression
Homework 11: Multiple linear regression Answers: Multiple linear regression

Mike’s Workbook for Biostatistics, Fall 2025