How are these numbers calculated?

Big Games

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

Week of 1/31100.0*Average seed
YDE 49 Rambam 31 -0.7
Flatbush 63 DRS 58 +0.1
Haftr 48 HANC 50 -0.1
Week of 2/5100.0*Average seed
Flatbush 67 Rambam 54 -1.1
DRS 51 Haftr 48 -0.1
HANC 74 D. Hatorah 49 -0.0
If winner is:HomeAway
Week of 2/12100.0*Average seed
HANC vs YDE-0.5+0.5
Shaare T. vs Flatbush+0.7-0.3

What If

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

100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011Count
100-0In15513421,195,336
Total:In15513421,195,336
Games Above .500
Chance Will Make Playoffs