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.
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Lecture
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Topic
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Lecture 01 — Introduction
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Our question, our data, and a first look at what we will do
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Lecture 02 — Introduction to R and Positron
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R, Positron and Projects
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Lecture 03 — Describing Our Data
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Wrangling, summaries, statistics, and our first real comparisons
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Lecture 04 — Testing Our Hypothesis
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The two-sample Welch’s t-test from assumptions to results
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Lecture 05 — From Script to Report
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Why Quarto? Code chunks, Markdown, and a professional Word document
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Lecture 06 — Linear Regression
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Predicting leaf area from paper tracing mass (Whitlock & Schluter Ch. 17)
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Lecture 07 — Real Climate Data in R
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Downloading, summarizing, and modeling Duluth weather station data
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Lecture 08 — Find Your Own Data
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Browse real data sources, load a candidate in R, and draft your Milestone 1
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Lecture 09 — Wide, Long, and Wild: Pivoting Real Data
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Reshaping Lake Superior ice cover data with pivot_longer() and pivot_wider()
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Lecture 10 — Factors: Taming Categorical Data
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Ordering, renaming, and lumping categories with forcats — and cleaner ggplots
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Lecture 11 — One-Way ANOVA: Comparing Many Groups
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Partitioning variance, checking assumptions, and post-hoc tests with emmeans
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Lecture 12 — Joins: Combining Two Tables
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Keys, mutating joins, and filtering joins with real Bigfoot report data
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Lecture 13 — Mapping: Where Is Bigfoot?
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Spatial data, sf, and geom_sf with real Bigfoot sighting reports
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Lecture 14 - Generalized Linear Models
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Lecture 15 - ANCOVA
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Principal Component Analysis (PCA)
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Understanding Multivariate Data with Darlingtonia californica
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Lecture 17 - Principal Component Analysis (PCA)
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Lecture 18 - Multivariate Community Analysis
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Lecture 19 - Logistic Regression
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Lecture 20 - To Be Determined
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Lecture 21 - To Be Determined
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Lecture 22 - To Be Determined
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Lecture 23 - To Be Determined
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Lecture 24 - To Be Determined
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Lecture 25 - To Be Determined
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Lecture 26 - To Be Determined
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Lecture 27 - To Be Determined
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Lecture 28 - To Be Determined
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Lecture 29 - To Be Determined
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Lecture 30 - To Be Determined
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