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
Odd 0 Stabæk 3 +0.2
Bodø/Glimt 1 Vålerenga 1 -0.1
Sarpsborg 1 Sandefjord 1 +0.1
Ranheim 1 Tromsø 2 +0.0
Week of 11/25100.0*Average seed
Vålerenga 2 Ranheim 1 +1.6
Tromsø 0 Sarpsborg 2 -0.2
Brann 1 Odd 0 +0.1
Points
Chance Will Win Championship