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
Alex 106.5 Brett 86 +12.9
+0.6
Andrew 137.5 Brian 94.6 -6.5
-0.2
Houston 128.8 Tron 105.6 -1.2
-0.0
Bo 115.7 Chris 86.7 -0.1
If winner is:HomeAway
Week of 11/17100.0*Chance in playoffs100.0*Average seed
Alex vs Chris+7.0-18.8
+0.3-0.8
Bo vs Andrew+11.5-5.9
+0.4-0.2
Brian vs Houston+5.5-2.8
+0.2-0.1

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
103-0In82187,455,786
92-168.3%114543214,011,363
81-214.8001318417,968,365
70-30.2007822001,417,966
Total:59.0%2523204010030,853,480
Games Above .500
Chance Will Make Playoffs