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
Forrest 88.5 Kaitlyn 62.5 In
Greg 89.5 Dan 107.5 In
Kelsey 98.5 Ben 109.5 In
+0.2
Mark Sellers 141.5 Tom 72.5 In
Kyle 106.5 Mark 52.5 -0.0
Doug 76 Lisa 83 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Kyle 112.5 Ben 100.5 -0.2
Doug 96.5 Mark 45 -0.0
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Ben vs Doug+0.5-0.6
Tom vs Kyle+0.3-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
101-0-0In10029,217,550
90-1-0In19503120,921,858
Total:In66211350,139,408
Games Above .500
Chance Will Make Playoffs