How are these numbers calculated?

Big Games

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

Week of 4/25100.0*Relegated100.0*Average seed
Norwich 0 Reading 2 -3.1
+0.1
QPR 0 Plymouth 0 -2.0
Barnsley 1 Wolves 1 -0.2
+0.1
Blackpool 1 Nottm Forest 1 +0.2
+0.2
Southampton 2 Burnley 2 -0.2
Derby 1 Charlton 0 +0.1
-0.2
Coventry 2 Watford 3 -0.0
Week of 5/3100.0*Relegated100.0*Average seed
Plymouth 1 Barnsley 2 -1.9
Swansea City 0 Blackpool 1 -0.4
Nottm Forest 3 Southampton 1 -0.2
Ipswich 2 Coventry 1 +0.1
Watford 3 Derby 1 +0.1
Points
Chance Will Win Championship