How are these numbers calculated?

Big Games

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

Week of 11/18100.0*Chance in playoffs100.0*Average seed
Andrew 0 Jennifer 145.88 +15.2
+0.5
Bill 143.13 Chris 144.55 -7.9
Paul 161.98 Matt 217.81 -0.6
Week of 11/25100.0*Chance in playoffs100.0*Average seed
Jennifer 142.99 Chris 114.57 +22.5
+0.9
Paul 152.3 Frank 187.85 +6.0
+0.1
Bill 199.25 Darrin 120.15 -5.9
-0.2
Matt 194.8 Jerry 169.86 -0.1
-0.1
Week of 12/2100.0*Chance in playoffs100.0*Average seed
Jennifer 146.35 Matt 152.14 -0.3
Todd 148.55 Bill 186.68 -0.2
Games Above .500
Chance Will Make Playoffs