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
Crystal Palace 0 Man City 2 +0.1
Week of 5/3100.0*Down to Championship100.0*Average seed
Chelsea 0 Norwich 0 No
Aston Villa 3 Hull 1 +0.7
-1.1
Man United 0 Sunderland 1 +0.4
-0.1
Arsenal 1 West Brom 0 -0.4
+0.2
Stoke 4 Fulham 1 -0.1
West Ham 2 Tottenham 0 -0.2
Man United 3 Hull 1 -1.0
Swansea 0 Southampton 1 +0.2
Man City 4 Aston Villa 0 +0.1
Sunderland 2 West Brom 0 -0.0
Week of 5/11100.0*Down to Championship100.0*Average seed
Hull 0 Everton 2 -1.2
West Brom 1 Stoke 2 +0.3
Tottenham 3 Aston Villa 0 +0.3
Man City 2 West Ham 0 +0.2
Sunderland 1 Swansea 3 +0.1
Points
Chance Will Win Championship