I’ve posted an updated version of the textbook with lots of minor edits to the text and programs. The same materials are posted both here and on the OER Commons website. I’ll also be available for hire as statistical consultant, details coming soon.

The most recent version of the textbook has a new host site on OER Commons, see https://oercommons.org/courseware/lesson/101759/student/. It also includes a new chapter on multiple regression.