Mathematics
** Openstax:
https://openstax.org/subjects/math
** College Algebra (used F 17)
AMSER - Applied Math and Science Education Repository
https://amser.org/index.php?P=AdvancedSearch
Statistics
Statistics and Probability by HippoCampus, powered by NROC
http://www.hippocampus.org/HippoCampus/Statistics%20%26%20Probability
Introduction to Statistics by Lumen Learning and OpenStax
