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 -20.1
-1.0
Greg 89.5 Dan 107.5 +3.9
+0.1
Kelsey 98.5 Ben 109.5 +3.5
+0.1
Kyle 106.5 Mark 52.5 -1.1
-0.1
Mark Sellers 141.5 Tom 72.5 +0.4
Doug 76 Lisa 83 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Mark Sellers 92.5 Kaitlyn 91.5 -24.0
-1.2
Greg 112.5 Lisa 108 -4.7
-0.2
Forrest 120.5 Dan 102 -1.2
Kelsey 92 Tom 109.5 +1.0
+0.1
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Kaitlyn vs Kelsey+0.9-0.9
Lisa vs Forrest+0.3-0.3
Dan vs Mark Sellers-0.2+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
61-0-0Out50507,714,124
50-1-0Out62387,712,604
Total:Out2525311915,426,728
Games Above .500
Chance Will Make Playoffs