How are these numbers calculated?

Big Games

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

Week of 12/1100.0*Chance in playoffs100.0*Average seed
Erdem 99 Stian 145 +1.2
+0.2
Olav 157 Alex 136 -0.4
Bendik 144 Jonas 178 +0.3
Kristian 210 Thomas 128 +0.1
-0.1
Week of 12/8100.0*Chance in playoffs100.0*Average seed
Olav 114 Stian 163 +0.1
Kristian 124 Jonas 151 +0.1
Week of 12/15None
Games Above .500
Chance Will Make Playoffs