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
Greg 89.5 Dan 107.5 +0.1
-0.1
Mark Sellers 141.5 Tom 72.5 Out
Doug 76 Lisa 83 +0.1
+0.4
Forrest 88.5 Kaitlyn 62.5 +0.1
-0.1
Kyle 106.5 Mark 52.5 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Greg 112.5 Lisa 108 -0.5
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-0.4+0.4
Kaitlyn vs Kelsey+0.1-0.1
Lisa vs Forrest+0.1-0.1

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
51-0-0Out75257,714,742
40-1-0Out50507,711,986
Total:Out623815,426,728
Games Above .500
Chance Will Make Playoffs