1. 2017-03-16 [2] [R-sig-teaching] reversing the scoring of some column r-sig-tea Robert Baer 2. 2017-03-08 [2] [R-sig-teaching] Reverse the scoring of some Columns r-sig-tea Joel Schwartz 3. 2017-03-01 [1] [R-sig-teaching] Coefficient of Partial Determination r-sig-tea AbouEl-Makari