Author

Bill Perry

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 — GGPlot I Grouped summaries, facets, and the pipe into ggplot
Lecture 04 — GGPlot II More geoms, zooming safely, and picking a theme
Lecture 05 — Wrangling Data filter, select, mutate, arrange — and chaining them into a pipeline
Lecture 06 — Summary Statistics Mean, median, spread, and describing groups the tidy way
Lecture 07 — From Script to Report Why Quarto? Code chunks, Markdown, and a professional Word document
Lecture 08 — Flex / Catch-up Open lab: revisit whatever isn’t sticking yet
Lecture 09 — T-Tests I: Setting Up the Test Hypotheses, the t-statistic, and checking assumptions before we test
Lecture 10 — T-Tests II: Running & Reporting the Test Running Welch’s t-test, reading the output, and writing it up
Lecture 11 — 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 15 — Your Final Project Starts Now Finding real data, asking a real question, and building toward a real answer
Lecture — One-Way ANOVA I: Setting Up the Test Why not many t-tests, the F-statistic, ordering groups with factors, fitting the model, and checking assumptions
Lecture 14 — One-Way ANOVA II: Running & Reporting the Test Reading the F table, finding which groups differ, and writing it up
Lecture 15 — Wide, Long, and Wild: Pivoting Real Data Reshaping Lake Superior ice cover data with pivot_longer() and pivot_wider()
Lecture — Joins: Combining Two Tables Keys, mutating joins, and filtering joins on a fisher reintroduction dataset
Lecture — Mapping: Where Is Bigfoot? Spatial data, sf, and geom_sf with real Bigfoot sighting reports
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