My little statistics library, chez-stats, is now available for installation through Raven, a package manager for Chez Scheme. Raven aims to provide an easy-to-use tool for local package management.
Raven’s installation instructions are straightforward. However, on macOS Catalina, I had to use sudo when making a copy of the Chez Scheme compiler, i.e., sudo cp chez scheme. If you are getting permission errors with curl -L http://ravensc.com/install | scheme, then try curl -o install.