How are these numbers calculated?

Big Games

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

Friday, 3/4100.0*Chance wins title100.0*Average seed
Cornell 64 Yale 88 No
-0.1
Columbia 66 Brown 63 +2.0
+0.1
Harvard 69 Princeton 67 +0.1
If winner is:HomeAway
Saturday, 3/5100.0*Chance wins title100.0*Average seed
Dartmouth vs Princeton+0.2-0.2
Columbia vs Yale+0.2-0.2

What If

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

100100100100100100100100
If finish:ChanceChance will finish season at seed
TWW-Lwins title12345678Count
111-0No50501,340,432,066
100-1No13871,340,345,022
Total:No31692,680,777,088
Games Above .500
Chance Will Win Championship