# Vignette Introduction

#### Martin Monkman

#### 2025-09-06

## Introduction

These vignettes serve a dual purpose:

- to introduce users of the `Lahman` package to the breadth and depth of the data, and a range of analysis and statistical methods that can be undertaken using the data in the package,

- to introduce users to the statistical software R, but particularly to the modern use in statistics and data science encapsulated in the `tidyverse` of R packages designed to facilitate data input and manipulation and graphics.

## Contents

Vignettes completed to-date:

1. Relationship Between Strikeouts and Home Runs – This vignette looks at the relationship between rate of strikeouts and home runs from the year 1950+. This question was inspired by Marchi and Albert (2014), Analyzing Baseball Data in R.

   - R packages demonstrated: `car` (Companion to Applied Regression)

2. Run Scoring Trends – Major League Baseball average per-game run scoring for each season since 1901.

3. Team Payroll and the World Series – This vignette examines whether there is a relationship between total team salaries (payroll) and World Series success.

4. Primer for Full House Modeling – This vignette introduces the key ideas behind Full House Modeling, a framework connecting observed achievement to latent talent distributions. It walks through the statistical foundations and demonstrates an application comparing batting averages across eras.

## Further reading

A number of books and on-line resources use the `Lahman` package as material for the examples. These include:

### Books

Michael Friendly and David Meyer (2016) Discrete Data Analysis with R: Visualization and Modeling Techniques for Categorical and Count Data (CRC Press). DDAR Web Site

Max Marchi and Jim Albert (2014) Analyzing Baseball Data with R (CRC Press)

- the book makes frequent reference to the raw Lahman database files in CSV form; the `Lahman` package was relatively recent when the book was published, and authors make a brief mention of the package. There is a Baseball with R blog containing extensions and other analyses.

David Robinson (2017) Introduction to Empirical Bayes (published at [gumroad.com])

- the book makes extensive use of the package to explain “the empirical Bayesian approach to estimation, credible intervals, A/B testing, mixture models, and other methods, all through the example of baseball batting averages.”

- the blog introduction to the book

Hadley Wickham and Garrett Grolemund (2017) R for Data Science: Import, Tidy, Transform, Visualize, and Model Data (O’Reilly)

- Section 5.6.3, “Counts”

### Articles, blog entries, and course materials

Shen Yan, Adrian Burgos Jr., Christopher Kinson, and Daniel J. Eck (2024-2025) Estimation of the MLB talent pool

Steven Buechler (2014-2015) Analysis of career performance in top home run hitters

- This is lecture 16 from Computing with Data Seminar

Kris Eberwein (2015-09-30) “Hacking The New Lahman Package 4.0-1 with R-Studio” (via [r-bloggers.com])

Michael Lopez (2016) Lab materials for Skidmore College MA 276, “Sports and Statistics”

- course reference page

Bill Petti (2015-09-21) A Short(-ish) Introduction to Using R Packages for Baseball Research

Exploring Baseball Data with R blog

Jim Albert (2018-12-24) The Vanishing 300 Batting Average

Jim Albert (2015-01-05) A Graph of a Batting Average

Brian Mills (2014-09-30) Using ggmap and Lahman to Find the Hometown College Rosters

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