The snreg package offers a set of methods for conducting regression analysis when the model errors follow a skew‑normal distribution.

The framework

The snreg package implements the framework developed in

Oleg Badunenko and Daniel J. Henderson (2023). “Production analysis with asymmetric noise”. Journal of Productivity Analysis, 61(1), 1–18. DOI

R commands snreg and snsf estimate models with skew-normal errors written and maintained by Oleg Badunenko (oleg.badunenko@brunel.ac.uk).

Acknowledgments

The R package snreg computes Owen’s T function using C code written by John Burkardt. This implementation, distributed under the MIT license, is publicly accessible at https://people.sc.fsu.edu/~jburkardt/c_src/owen/owen.html.

📦 Installing `snreg` R Package from GitHub

1. Install the `devtools` package

Install devtools from CRAN (if you haven’t already):

# Install only if not already installed
if (!requireNamespace("remotes", quietly = TRUE)) {
  install.packages("remotes")
}

2. Install the package from GitHub

Install the snreg package from GitHub. In this code, you are installing the snreg package created by OlegBadunenko.

# Install only if not already installed
if (!requireNamespace("snreg", quietly = TRUE)) {
  remotes::install_github("OlegBadunenko/snreg", dependencies = TRUE, build_vignettes = FALSE)
} else {
  message("Package 'snreg' is already installed; skipping.")
}

3. Load the installed package

library(snreg)

💡 Notes & Tips

Works identically across R, RStudio, Windows, Mac, and Linux.
Some GitHub packages may already be available in environments like npsf.
If installation fails, common causes include missing build tools, incorrect repo names, or network restrictions.

Illustration and Uses

This article guides through the code and illustrates the functionality of the package using

a subset of the banking data (banks07) available in the package.

Regression with Skew-Normally Distributed Error Term