How are these numbers calculated?

Big Games

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

Week of 4/27100.0*Down to Championship100.0*Average seed
Sunderland 4 Cardiff 0 +0.1
Week of 5/3100.0*Down to Championship100.0*Average seed
Sunderland 2 West Brom 0 +0.3
-1.2
Stoke 4 Fulham 1 -0.3
Man United 0 Sunderland 1 +0.2
-0.2
Aston Villa 3 Hull 1 +0.1
Arsenal 1 West Brom 0 +0.1
-0.5
Chelsea 0 Norwich 0 +0.1
West Ham 2 Tottenham 0 -0.3
Swansea 0 Southampton 1 +0.1
Man United 3 Hull 1 +0.1
Man City 4 Aston Villa 0 +0.1
Week of 5/11100.0*Down to Championship100.0*Average seed
West Brom 1 Stoke 2 +0.5
-1.0
Norwich 0 Arsenal 2 No
Hull 0 Everton 2 +0.2
Sunderland 1 Swansea 3 +0.1
Tottenham 3 Aston Villa 0 +0.1
Points
Chance Will Win Championship