cl-mathstats
This system is no longer being maintained (at least not by Gary King).

CL-MathStats is a set of miscellaneous Common Lisp mathematics and statistics utilities.

Its home page is at http://common-lisp.net/project/cl-mathstats and that is probably much more up to date.

ASDF-install package (obsolete) http://common-lisp.net/project/cl-mathstats/cl-mathstats_latest.tar.gz

CL-MathStats is one of Gary King's Common Lisp packages. Blame him!