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
West Brom 0 Aston Villa 0 -0.5
Liverpool 0 Fulham 1 -0.2
Swansea 4 Wolverhampton 4 +0.1
Sunderland 2 Bolton 2 +0.1
Everton 4 Fulham 0 +0.1
Norwich 0 Liverpool 3 +0.0
Stoke City 1 Everton 1 +0.0
Week of 5/5100.0*Average seed
Bolton 2 West Brom 2 -0.2
QPR 1 Stoke City 0 +0.1
Man. United 2 Swansea 0 +0.1
Arsenal 3 Norwich 3 -0.0
Liverpool 4 Chelsea 1 -0.0
Fulham 2 Sunderland 1 +0.0
Week of 5/13100.0*Average seed
West Brom 2 Arsenal 3 -0.5
Swansea 1 Liverpool 0 -0.5
Norwich 2 Aston Villa 0 -0.2
Stoke City 2 Bolton 2 +0.1
Sunderland 0 Man. United 1 +0.1
Points
Chance Will Win Championship