How are these numbers calculated?

Big Games

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

Week of 5/7100.0*Average seed
Crystal Palace 2 Stoke City 1 -0.4
Sunderland 3 Everton 0 +0.2
Sunderland 3 Chelsea 2 +0.2
Norwich City 4 Watford 2 +0.2
Liverpool 2 Watford 0 +0.1
Leicester City 3 Everton 1 +0.1
West Ham 1 Swansea City 4 -0.1
Liverpool 1 Chelsea 1 -0.0
Week of 5/15100.0*Average seed
Stoke City 2 West Ham 1 +0.7
Swansea City 1 Manchester City 1 +0.2
Chelsea 1 Leicester City 1 +0.1
Points
Chance Will Win Championship