Author

Bill Perry

Every lecture below pulls its title, topic, and description straight from the .qmd file’s YAML frontmatter — nothing here is hand-typed. To add a new lecture, drop a folder in and give the file order, week, and description fields (see example_lecture.qmd). To reorder lectures, change the order: number in the file — you never need to rename folders, files, or touch this page.

Lecture Topic
Lecture 01 — Introduction Our question, our data, and a first look at what we will do
Lecture 02 — Introduction to R and Positron R, Positron and Projects
Lecture 03 — Describing Our Data Wrangling, summaries, statistics, and our first real comparisons
Lecture 04 — Testing Our Hypothesis The two-sample Welch’s t-test from assumptions to results
Lecture 05 — From Script to Report Why Quarto? Code chunks, Markdown, and a professional Word document
Lecture 06 — Linear Regression Predicting leaf area from paper tracing mass (Whitlock & Schluter Ch. 17)
Lecture 07 — Real Climate Data in R Downloading, summarizing, and modeling Duluth weather station data
Lecture 08 — Find Your Own Data Browse real data sources, load a candidate in R, and draft your Milestone 1
Lecture 09 — Wide, Long, and Wild: Pivoting Real Data Reshaping Lake Superior ice cover data with pivot_longer() and pivot_wider()
Lecture 10 — Factors: Taming Categorical Data Ordering, renaming, and lumping categories with forcats — and cleaner ggplots
Lecture 11 — One-Way ANOVA: Comparing Many Groups Partitioning variance, checking assumptions, and post-hoc tests with emmeans
Lecture 12 — Joins: Combining Two Tables Keys, mutating joins, and filtering joins with real Bigfoot report data
Lecture 13 — Mapping: Where Is Bigfoot? Spatial data, sf, and geom_sf with real Bigfoot sighting reports
Lecture 14 - Generalized Linear Models  
Lecture 15 - ANCOVA  
Principal Component Analysis (PCA) Understanding Multivariate Data with Darlingtonia californica
Lecture 17 - Principal Component Analysis (PCA)  
Lecture 18 - Multivariate Community Analysis  
Lecture 19 - Logistic Regression  
Lecture 20 - To Be Determined  
Lecture 21 - To Be Determined  
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Lecture 30 - To Be Determined  
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