How are these numbers calculated?

Big Games

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

Friday, 3/4100.0*Average seed
Harvard 69 Princeton 67 -0.3
Dartmouth 72 Penn 64 -0.1
If winner is:HomeAway
Saturday, 3/5100.0*Average seed
Harvard vs Penn-0.4+0.6
Dartmouth vs Princeton-0.2+0.1

What If

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

100100100100100100100100
If finish:ChanceChance will finish season at seed
TWW-Lwins title12345678Count
72-0No100277,096,054
61-1No9373,338,123,352
50-2No9194,586,625,458
Total:No415358,201,844,864
Games Above .500
Chance Will Win Championship