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
Jenn 121.52 Dave 114.46 +9.9
+0.2
Tom H 81.9 Shara 100.3 +2.2
-0.0
Laurel 104.68 Ethan 100.76 -2.2
Justin 73 Riley 130.16 +0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Jenn 100.28 Tom K 107.62 -17.8
-1.8
Justin 80.66 Laurel 101.48 -14.7
Erica 104.54 Tom H 64.7 +2.9
Ethan 114.22 Shara 122.28 -0.9
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Jenn vs Riley+20.7Out
+0.2-0.4
Justin vs Tom K-20.2+27.1
-0.2+0.3
Tom H vs Laurel-9.7+7.2
-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
81-057.8%584219,384,356
70-1Out10010,815,860
Total:37.1%376330,200,216
Games Above .500
Chance Will Make Playoffs