BIOL202 Tutorials
Preface
Welcome
Getting started with R, RStudio & R Markdown
1 What are R and RStudio?
- 1.1 Installing R and RStudio
2 Start using R & RStudio
Reproducible Workflows
3 Reproducible Research
4 Preparing and formatting assignments
5 Preparing and importing Tidy Data
Visualizing and Describing Data
6 Visualizing a single variable
7 Describing a single variable
8 Visualizing associations between two variables
Inferential Statistics
9 Sampling, Estimation, & Uncertainty
10 Hypothesis testing
11 Analyzing a single categorical variable
12 Analyzing associations between two categorical variables
13 Analyzing a single numerical variable
14 Comparing means among two groups
15 Checking assumptions and data transformations
16 Comparing means among more than two groups
17 Analyzing associations between two numerical variables
18 Least-squares linear regression
Load all the necessary packages
Data summaries with “gtsummary” package
Creating tables in R Markdown
- 18.5 Load packages and import data
  - 18.5.1 Formatting output from the skimr package
  - 18.5.2 A nicely formatted table of descriptive statistics
Visual Markdown Editor
- A more familiar editing environment
Common errors and their solutions
Published with bookdown

Tutorials for BIOL202: Introduction to Biostatistics

Messy output when loading packages

Solution: When you load packages in R, the knitted document will automatically show associated messages as output in your knitted document. This can make your assignment look messy when you are loading a bunch of packages. To hide these messages, add message = FALSE into the R chunk where you load packages. See the example below.