How are these numbers calculated?

Big Games

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

Week of 5/5100.0*Relegation100.0*Average seed
Swansea City 1 Everton 0 +30.7
-0.3
Hull City 0 Sunderland 2 +20.4
-0.3
Manchester City 5 Crystal Palace 0 -0.1
+0.0
Week of 5/10100.0*Relegation100.0*Average seed
Sunderland 0 Swansea City 2 +13.7
-0.1
Crystal Palace 4 Hull City 0 Yes
-0.1
Week of 5/15None
Points
Chance Will Win Championship