How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 10/29100.0*First Division100.0*Last Place100.0*Average seed
Princeton 35 Cornell 9 +0.3
-2.6
+0.1
Dartmouth 13 Harvard 28 -0.2
-2.6
Brown 34 Penn 31 +7.9
-0.1
If winner is:HomeAway
Week of 11/5100.0*First Division100.0*Last Place100.0*Average seed
Harvard vs ColumbiaNo+1.8
+16.2-16.2
-0.4+0.4
Princeton vs Dartmouth+0.4-0.4
-5.3+5.3
+0.1-0.1
Cornell vs Penn+0.3-0.3
+4.9-4.9
-0.1+0.1
Yale vs Brown-0.3+0.3
-4.9+4.9
+0.1-0.1

What If

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

100100100100100100100100
If finish:FirstChance will finish regular season at seedLast
TWW-LChance wins regular season titleDivision12345678PlaceCount
33-0No14.5%01445365No1,366,722
22-1NoNo225492323.3%4,094,275
11-2NoNo158585.44,094,792
00-3NoNo100Yes1,368,547
Total:No1.8%02614255353.3%10,924,336
Games Above .500
RPI