How are these numbers calculated?

Big Games

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

Week of 4/26100.0*Promoted100.0*Average seed
Hartlepool 0 Nottm Forest 1 +11.4
+0.7
Millwall 3 Carlisle 0 +7.1
+0.2
Doncaster 2 Luton 0 -3.8
-0.2
Tranmere 1 Southend 0 +0.6
+0.2
Week of 5/3100.0*Promoted100.0*Average seed
Nottm Forest 3 Yeovil 2 +24.8
+0.6
Cheltenham 2 Doncaster 1 +17.8
+0.3
Carlisle 1 Bournemouth 1 +2.6
-0.0
Points
Chance Will Win Championship