How are these numbers calculated?

Big Games

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

Week of 4/28100.0*Average seed
Norwich 0 Liverpool 3 -1.0
Sunderland 2 Bolton 2 +0.1
Swansea 4 Wolverhampton 4 +0.1
West Brom 0 Aston Villa 0 +0.0
Everton 4 Fulham 0 +0.0
Stoke City 1 Arsenal 1 -0.0
Week of 5/5100.0*Average seed
Arsenal 3 Norwich 3 +0.3
Man. United 2 Swansea 0 +0.2
QPR 1 Stoke City 0 +0.2
Fulham 2 Sunderland 1 +0.2
Bolton 2 West Brom 2 -0.0
Week of 5/13100.0*Average seed
Norwich 2 Aston Villa 0 +0.9
Stoke City 2 Bolton 2 +0.2
Sunderland 0 Man. United 1 +0.1
West Brom 2 Arsenal 3 +0.1
Swansea 1 Liverpool 0 -0.1
Points
Chance Will Win Championship