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Introduction to Probability and Statistics

Math 141 Reed College, Fall 2025


Hex logo of Stat 20 showing a golden bear.

Week 1

Wednesday, Sep 3

Course Introduction & Statistical Thinking
Reading Slides

Thursday, Sep 4

Lab: Introduction to R, RStudio, and Quarto
Reading + HW Lab Instructions Slides

Friday, Sep 5

Data Visualization
Reading + HW Slides

Resources

  • Join Slack
  • Gradescope course entry code: 7XJR4K

Week 2

Monday, Sep 8

Data Viz with ggplot2
Reading + HW Slides

Wednesday, Sep 10

More Data Viz with ggplot2
Reading + HW Slides

Thursday, Sep 11

Lab: Data Visualization with ggplot2
Lab

Friday, Sep 12

Summary Statistics
Reading + HW Slides

Resources

  • None this week

Week 3

Monday, Sep 15

Data Wrangling
Reading + HW Slides

Wednesday, Sep 17

Data Collection and Ethics
Reading + HW Slides

Thursday, Sep 18

Lab: Data Wrangling
Lab

Friday, Sep 19

More Data Collection
Reading + HW Slides

Resources

  • None this week

Week 4

Monday, Sep 22

Statistical Modeling
Reading + HW Slides

Wednesday, Sep 24

Statistical Modeling
Reading + HW Slides

Thursday, Sep 25

Lab: Sampling and Data Collection
Lab

Friday, Sep 26

Statistical Modeling
Reading + HW Slides

Resources

  • None this week

Week 5

Monday, Sep 29

Statistical Modeling
Reading + HW Slides

Wednesday, Oct 1

Statistical Modeling
Reading + HW Slides

Thursday, Oct 2

Lab: Linear Regression
Lab

Friday, Oct 3

Statistical Modeling
Reading + HW Slides

Resources

  • None this week

Week 6

Monday, Oct 6

Probability
Reading Probability HW (Due Oct 13) Slides

Wednesday, Oct 8

Probability
Reading Slides

Thursday, Oct 9

Lab: Exam Review
Midterm Review

Friday, Oct 10

Quantifying Uncertainty
Reading Slides

Resources

  • Sign up for a midterm oral exam slot

Week 7

Monday, Oct 13

Sampling Distributions
Reading + HW Slides

Wednesday, Oct 15

The Bootstrap (and Introduction to Confidence Intervals)
Reading + HW Slides

Thursday, Oct 16

No lab meeting: oral exams

Friday, Oct 17

No class: more oral exams

Resources

  • Clone the repo to answer midterm questions before starting the midterm in Gradescope: https://github.com/Math-141/midterm.git

Week Fall Break

Saturday, Oct 18 - Sunday, Oct 26

No Class

Resources

  • None this week

Week 8

Monday, Oct 27

Estimation: Confidence Intervals
Reading + HW Slides

Wednesday, Oct 29

Testing Hypotheses
Reading + HW Slides

Thursday, Oct 30

Lab: Sampling, Bootstrapping, and Confidence, Oh My!
Lab

Friday, Oct 31

More Testing Hypotheses
Reading + HW Slides

Resources

  • None this week

Week 9

Monday, Nov 3

Types of Errors (and more hypothesis testing)
Reading + HW Slides

Wednesday, Nov 5

Power
Reading + HW Slides

Thursday, Nov 6

Lab: Hypothesis testing via simulation
Lab

Friday, Nov 7

p-value pitfalls
Reading + HW Slides

Resources

  • Clone the repo to get the necessary files for midterm makeups: https://github.com/Math-141/midterm-makeup.git

Week 10

Monday, Nov 10

Random Variables I
Reading + HW Slides

Wednesday, Nov 12

Random Variables II
Reading + HW Slides

Thursday, Nov 13

Lab: p-value pitfalls and random variables
Lab

Friday, Nov 14

Random Variables III
Reading + HW Slides

Resources

  • None this week

Week 11

Monday, Nov 17

Theory-based inference
Reading + HW Slides

Wednesday, Nov 19

Theory-based inference
Reading + HW Slides

Thursday, Nov 20

Lab: Two routes to inference
Lab

Friday, Nov 21

Inference for regression I: Overview and theory-based approach
Reading + HW Slides

Resources

  • None this week

Week 12

Monday, Nov 24

Inference for regression II
Reading + HW Slides

Wednesday, Nov 26

Review Day
Reading + HW Slides

Resources

  • Sign up for a final oral exam slot

Week 13

Monday, Dec 1

ANOVA (and wrap up inference for regression)
Reading + HW Slides

Wednesday, Dec 3

Chi-squared test of independence
Reading + HW Slides

Thursday, Dec 4

Lab: Advanced topics in inference (regression, ANOVA, and chi-squared tests)
Lab

Friday, Dec 5

Inference: big picture
Reading + HW Slides

Resources

  • Sign up for a final oral exam slot

Week 14

Monday, Dec 8

A model for binary categorical response variables
Reading + HW Slides

Tuesday, Dec 9

Lab: Exam Review
Lab

Wednesday, Dec 10

Wrap up / Socks / Bayesian Estimation
Reading + HW Slides

Resources

  • None this week
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