How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/3100.0*Chance in playoffs100.0*Average seed
Alter 102.6 Keating 100.9 +11.6
+0.4
Swords 149.9 Mendoza 88.5 -3.7
-0.1
Shroff 86.3 Petrella 87.6 +3.7
+0.1
Del Cueto 126.6 Brockett 94.7 -2.2
-0.1
Swikart 123.1 Cohen 80.8 -1.8
-0.2
If winner is:HomeAway
Week of 11/10100.0*Chance in playoffs100.0*Average seed
Illgen vs Alter-9.4+9.5
-0.4+0.4
Brockett vs Swords+5.5-5.5
+0.1-0.1
Petrella vs Del Cueto+1.7-1.7
+0.1-0.1
Mendoza vs Shroff+1.3-1.3
Keating vs Swikart+1.1-1.1
+0.2-0.2

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
104-0In9090482,360
93-199.9%54351101,925,539
82-295.2133151502,889,834
71-364.915593321,927,838
60-419.0195724482,757
Total:84.3%2422381427,708,328
Games Above .500
Chance Will Make Playoffs