How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
Doug 76 Lisa 83 +0.4
Greg 89.5 Dan 107.5 -0.3
Forrest 88.5 Kaitlyn 62.5 -0.1
Mark Sellers 141.5 Tom 72.5 Out
Kyle 106.5 Mark 52.5 +0.0
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Greg 112.5 Lisa 108 -0.3
Forrest 120.5 Dan 102 +0.1
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Dan vs Mark Sellers-0.6+0.2
Lisa vs Forrest+0.1-0.0
Kaitlyn vs Kelsey+0.1-0.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
51-0-0Out831717,808,756
40-1-0Out712932,330,652
Total:Out752550,139,408
Games Above .500
Chance Will Make Playoffs