How are these numbers calculated?

Big Games

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

Week of 11/11100.0*OBOS-ligaen100.0*Average seed
Odd 0 Stabæk 3 +1.0
-0.1
Start 0 Rosenborg 1 -0.8
+0.1
Bodø/Glimt 1 Vålerenga 1 -0.8
-0.2
Strømsgodset 2 Lillestrøm 2 -0.1
+0.1
Ranheim 1 Tromsø 2 -0.1
Week of 11/25100.0*OBOS-ligaen100.0*Average seed
Lillestrøm 2 Kristiansund 0 +2.7
-0.5
Haugesund 3 Start 1 No
+0.1
Rosenborg 1 Bodø/Glimt 1 -0.8
+0.3
Stabæk 2 Strømsgodset 2 +0.2
+0.0
Points
Chance Will Win Championship