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
Mjøndalen 1 Sarpsborg 3 +0.5
Haugesund 1 Sandefjord 2 +0.1
Lillestrøm 4 Strømsgodset 1 +0.1
Odd 1 Vålerenga 2 -0.1
Tromsø 0 Stabæk 0 +0.0
Week of 12/5100.0*Average seed
Sarpsborg 0 Tromsø 1 -0.2
Vålerenga 2 Mjøndalen 0 -0.1
Week of 12/12100.0*Average seed
Brann 2 Sarpsborg 1 -0.1
Lillestrøm 2 Sandefjord 0 +0.0
Points
Chance Will Win Championship