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 +6.8
+0.9
Greg 89.5 Dan 107.5 +2.4
-0.1
Kelsey 98.5 Ben 109.5 +0.8
Kyle 106.5 Mark 52.5 -0.3
Mark Sellers 141.5 Tom 72.5 +0.2
-0.2
Doug 76 Lisa 83 -0.1
-0.2
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Forrest 120.5 Dan 102 +12.2
+0.8
Greg 112.5 Lisa 108 -4.4
Mark Sellers 92.5 Kaitlyn 91.5 -4.2
-0.1
Kelsey 92 Tom 109.5 -1.4
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Mark vs Greg+25.9-3.6
+0.6-0.1
Dan vs Mark Sellers+14.1-5.8
+0.3-0.1
Kaitlyn vs Kelsey+10.1-7.6
+0.4-0.3
Lisa vs ForrestOut+5.0
-0.5+0.3
Tom vs Kyle+2.6-1.6
+0.1-0.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
71-0-014.2%113464032,330,652
60-1-0Out10017,808,756
Total:9.2%18296150,139,408
Games Above .500
Chance Will Make Playoffs