How are these numbers calculated?

Big Games

How we did yesterday and who we should root for today.   Explain

Friday, 1/29100.0*Chance wins regular season title100.0*Average seed
Harvard 65 Cornell 77 +2.1
+0.5
Dartmouth 60 Columbia 77 -0.3
Yale 81 Penn 58 -0.3
Brown 59 Princeton 83 -0.2
If winner is:HomeAway
Saturday, 1/30100.0*Chance wins regular season title100.0*Average seed
Dartmouth vs Cornell-2.5+2.5
-0.6+0.6
Harvard vs Columbia+0.6-0.6
Yale vs Princeton-0.2+0.2
Brown vs Penn+0.1-0.1

What If

Chances based on how well the Cornell finish out the regular season.   Explain

100100100100100100100100
If finish:Chance will finish regular season at seed
TWW-LChance wins regular season title12345678Count
1211-097.9%982311,132
1110-189.6901002,090,830
109-264.765323010,437,008
98-324.62550232031,282,700
87-42.0221452740062,548,315
76-50.001113838121087,551,769
65-6No004264523287,558,209
54-7No0220512862,554,920
43-8No02277131,288,040
32-9No069410,436,808
21-10No1992,092,066
10-11No100310,811
Total:4.6%59121415161614388,462,608
Games Above .500
RPI