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 -9.1
-0.4
Shroff 86.3 Petrella 87.6 -3.1
-0.1
Larson 114.3 Illgen 130 -2.3
-0.1
Swords 149.9 Mendoza 88.5 +1.2
+0.1
Del Cueto 126.6 Brockett 94.7 +1.0
Swikart 123.1 Cohen 80.8 +1.0
If winner is:HomeAway
Week of 11/10100.0*Chance in playoffs100.0*Average seed
Keating vs Swikart+14.2-14.4
+0.5-0.5
Mendoza vs Shroff-4.8+4.8
-0.1+0.1
Petrella vs Del Cueto-4.7+4.7
-0.1+0.1
Illgen vs Alter-3.3+3.4
-0.2+0.2
Cohen vs Larson-0.5+0.5
Brockett vs Swords-0.5+0.5

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
94-0100.0%8712101,463,747
83-198.345381625,722,830
72-279.48254620008,428,243
61-332.0032960805,511,008
50-42.93484091,355,964
Total:69.3%202128264122,481,792
Games Above .500
Chance Will Make Playoffs