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
Dartmouth 60 Columbia 77 +8.0
+0.5
Yale 81 Penn 58 -1.3
Brown 59 Princeton 83 -1.1
Harvard 65 Cornell 77 +0.5
If winner is:HomeAway
Saturday, 1/30100.0*Chance wins regular season title100.0*Average seed
Harvard vs Columbia-8.7+8.7
-0.5+0.5
Yale vs Princeton-0.8+0.8
Brown vs Penn+0.2-0.2

What If

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

100100100100100100100100
If finish:Chance will finish regular season at seed
TWW-LChance wins regular season title12345678Count
1411-0Yes100311,776
1310-1100.0%10002,087,828
129-299.1991010,437,986
118-393.0937031,284,754
107-470.971281062,543,004
96-530.23052171087,552,730
85-63.0327472120087,557,646
74-70.00114413590062,553,180
63-8No005274521231,296,657
52-9No0219503010,437,556
41-10No0124752,088,146
30-11No0496311,345
Total:29.7%302317128631388,462,608
Games Above .500
RPI