How are these numbers calculated?

Big Games

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

Week of 11/28100.0*Average seed
Haugesund 1 Sandefjord 2 -0.8
Mjøndalen 1 Sarpsborg 3 -0.2
Lillestrøm 4 Strømsgodset 1 +0.1
Tromsø 0 Stabæk 0 +0.1
Odd 1 Vålerenga 2 +0.0
Week of 12/5100.0*Average seed
Sandefjord 3 Kristiansund 2 -0.3
Sarpsborg 0 Tromsø 1 -0.2
Viking 3 Odd 1 +0.0
Strømsgodset 0 Haugesund 0 -0.0
Week of 12/12100.0*Average seed
Haugesund 1 Molde 2 -0.8
Tromsø 0 Viking 2 +0.3
Lillestrøm 2 Sandefjord 0 +0.2
Rosenborg 2 Strømsgodset 2 -0.1
Points
Chance Will Win Championship