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 -25.4
+0.7
Strømsgodset 2 Lillestrøm 2 +1.9
-0.0
Start 0 Rosenborg 1 -1.6
+0.0
Sarpsborg 1 Sandefjord 1 +0.0
Week of 11/25100.0*OBOS-ligaen100.0*Average seed
Lillestrøm 2 Kristiansund 0 +7.5
-0.3
Haugesund 3 Start 1 -6.9
+0.2
Stabæk 2 Strømsgodset 2 -6.7
-0.1
Rosenborg 1 Bodø/Glimt 1 +0.1
Points
Chance Will Win Championship