How are these numbers calculated?

Big Games

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

Week of 11/19100.0*Chance in playoffs100.0*Average seed
Amber 107.56 Jason 65.34 -15.0
-1.4
Josh 122.7 Bill 125.26 -4.3
-0.2
Harry 95.78 Justin 88.5 +2.0
Tom 75.06 Joe 94.3 -1.5
Garrett 139.86 Kellen 93.32 +0.9
+0.0
Mark 110.82 AJ 113.9 -0.3
-0.2
Week of 11/26100.0*Chance in playoffs100.0*Average seed
Justin 78.38 Jason 72.66 Out
-1.3
Harry 109.88 Mark 110.78 +2.2
Bill 109.4 Joe 93.36 +1.4
Tom 146.36 Kellen 70.62 +1.4
-0.1
Garrett 96.98 AJ 93.82 +0.3
+0.1
Amber 96.88 Josh 128.76 +0.1
Week of 12/3100.0*Chance in playoffs100.0*Average seed
Joe 86.58 Jason 95.2 +0.9
AJ 83.18 Justin 72.62 -0.2
Mark 110.42 Amber 70.5 +0.1
Games Above .500
Chance Will Make Playoffs