Revert "d"

This reverts commit e6856fa264ab8548afd2351bc3d5c534b391dcf3.

Conflicts:
	Stats/stats21-linearRegression.Rmd
	Stats/stats21-linearRegression.md
Revert "Revert "d""

This reverts commit e0db577a7a19e90e5a6a08449a034c21136e8445.
Merge remote-tracking branch 'origin/master'