How are these numbers calculated?

Big Games

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

Wednesday100.0*Average seed
umass 89 maine 79 +0.2
umbc 57 stony brook 64 -0.1
hartford 65 new hampshire 56 +0.0
Saturday100.0*Average seed
umbc 83 umass 75 -0.1
If winner is:HomeAway
Tuesday100.0*Average seed
new hampshire vs umass-0.1+0.3

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789Count
61-0Out396138,002,065
50-1Out10072,598,141
Total:Out1486110,600,206
Games Above .500
Chance Will Make Playoffs