How are these numbers calculated?

Big Games

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

Week of 11/10100.0*Chance in playoffs100.0*Average seed
Andrew 137.5 Brian 94.6 +12.8
+0.5
Alex 106.5 Brett 86 -8.0
-0.2
Houston 128.8 Tron 105.6 -1.7
-0.1
Bo 115.7 Chris 86.7 -0.2
If winner is:HomeAway
Week of 11/17100.0*Chance in playoffs100.0*Average seed
Bo vs Andrew-25.6+13.1
-1.0+0.5
Brian vs Houston+11.9-6.1
+0.5-0.3
Alex vs Chris-4.1+11.0
-0.1+0.4

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
103-0In643610,880,010
92-167.1%83563313,606,869
81-218.4001718015,599,266
70-30.500762210767,335
Total:68.2%2614003110030,853,480
Games Above .500
Chance Will Make Playoffs