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
Kelsey 98.5 Ben 109.5 -11.4
-0.8
Greg 89.5 Dan 107.5 +4.9
+0.2
Forrest 88.5 Kaitlyn 62.5 +2.9
+0.1
Mark Sellers 141.5 Tom 72.5 -2.7
Kyle 106.5 Mark 52.5 -1.4
-0.2
Doug 76 Lisa 83 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Kelsey 92 Tom 109.5 -24.0
-1.2
Greg 112.5 Lisa 108 -6.5
-0.2
Mark Sellers 92.5 Kaitlyn 91.5 -1.1
Forrest 120.5 Dan 102 -0.5
-0.1
Doug 96.5 Mark 45 +0.1
-0.1
Kyle 112.5 Ben 100.5 -0.1
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Kaitlyn vs KelseyOut+34.4
-1.4+1.4
Mark vs Greg+15.6-15.6
+0.3-0.3
Dan vs Mark Sellers+9.4-9.4
+0.2-0.2
Lisa vs Forrest-3.1+3.1
-0.1+0.1
Tom vs Kyle+3.1-3.1
+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs123456789101112Count
71-0-068.8%1950317,712,604
60-1-0Out1007,714,124
Total:34.4%925165015,426,728
Games Above .500
Chance Will Make Playoffs