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
Tom H 81.9 Shara 100.3 -18.4
-0.6
Jenn 121.52 Dave 114.46 -4.9
-0.1
Laurel 104.68 Ethan 100.76 -3.0
-0.1
Justin 73 Riley 130.16 +1.5
+0.1
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Justin 80.66 Laurel 101.48 +14.6
+1.0
Erica 104.54 Tom H 64.7 -7.2
-0.2
Jenn 100.28 Tom K 107.62 -6.0
-0.1
If winner is:HomeAway
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Tom H vs LaurelInOut
+3.0-3.0

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-0In1005,138,897
60-1Out1005,142,247
Total:50.0%505010,281,144
Games Above .500
Chance Will Make Playoffs