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
Chad 109.72 Matthew 120.36 -15.3
-0.4
Kevin 66.1 Josh 97.08 -9.2
-0.1
Jacob 85.44 Maria 126.76 -0.9
Kyle 132.9 J Z 89.22 -0.1
-0.0
Amanda 99.68 Jacqueline 77.7 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Chad 145.36 Amanda 110.24 +33.8
+0.5
Josh 161.12 Jacqueline 84.76 -19.3
-0.2
Kevin 160.54 Maria 91.6 +0.9
+0.1
Lindsey 111.14 Matthew 133.82 -0.1
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Chad vs Josh+6.0Out
+0.1-0.6
Jacob vs J Z-2.6+12.1
-0.1+0.4
Kyle vs Kevin+0.0-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-053.0%6474782,043,643
60-1Out96410,546,941
Total:46.9%54253092,590,584
Games Above .500
Chance Will Make Playoffs