How are these numbers calculated?

Big Games

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

Week of 5/4100.0*Down to Championship100.0*Average seed
West Brom 2 Wigan 3 +0.4
-0.1
Norwich 1 Aston Villa 2 +0.1
Tottenham 1 Southampton 0 +0.1
-0.6
Fulham 2 Reading 4 +0.3
West Ham 0 Newcastle 0 +0.0
Swansea 0 Man City 0 -0.0
Week of 5/12100.0*Down to Championship100.0*Average seed
Norwich 4 West Brom 0 +0.4
-0.2
Sunderland 1 Southampton 1 -0.4
+0.2
QPR 1 Newcastle 2 +0.3
-0.2
Aston Villa 1 Chelsea 2 +0.1
Arsenal 4 Wigan 1 No
+0.0
Fulham 1 Liverpool 3 +0.2
Stoke 1 Tottenham 2 +0.1
Everton 2 West Ham 0 +0.0
Week of 5/19100.0*Down to Championship100.0*Average seed
Southampton 1 Stoke 1 -0.7
Man City 2 Norwich 3 -0.6
Swansea 0 Fulham 3 -0.4
Newcastle 0 Arsenal 1 +0.2
Tottenham 1 Sunderland 0 +0.1
West Ham 4 Reading 2 -0.1
Wigan 2 Aston Villa 2 -0.0
Points
Chance Will Win Championship