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*Average seed
Ranheim 1 Tromsø 2 +0.4
Strømsgodset 2 Lillestrøm 2 +0.1
Bodø/Glimt 1 Vålerenga 1 +0.1
Sarpsborg 1 Sandefjord 1 +0.0
Start 0 Rosenborg 1 +0.0
Week of 11/25100.0*Average seed
Tromsø 0 Sarpsborg 2 -0.4
Vålerenga 2 Ranheim 1 -0.1
Points
Chance Will Win Championship