The University of Virginia Library is an open and inclusive community that embraces the full spectrum of human attributes, perspectives, and cultures. The values of respect, integrity, diversity and ...

Authors often underestimate their bargaining power in publishing negotiations. By accepting it for publication, the publisher has acknowledged the value of your work. They’ve determined that it is ...

Volumes from the McGehee Miniature Book Collection including (inset) “Medieval Craftsman,” the 10,000th volume in the collection to be cataloged. In 2005, Caroline Brandt, collector and co-founder of ...

One of the most well-known statistical tests to analyze the differences between means of given groups is the ANOVA (analysis of variance) test. While ANOVA is a great tool, it assumes that the data in ...

Note: This post is not about hierarchical linear modeling (HLM; multilevel modeling). Hierarchical regression is model comparison of nested regression models.

In this article, we plan to get you up and running with gamma regression. But before we dive into that, let’s review the familiar normal distribution. This will provide some scaffolding to help us ...

This form is intended for general use in the context of a course at UVA. You can also request Special Collections Instruction for Special Collections materials, or request a Virtual Workshop for ...

Library News: Get the latest updates from the Library News feed. Status Dashboard: See currently Library services, including any interruptions or significant short-term changes.

A count model is a linear model where the dependent variable is a count. For example, the number of times a car breaks down, the number of rats in a litter, the number of times a young student gets ...