How are these numbers calculated?

Big Games

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

Week of 4/13100.0*League Two100.0*Average seed
Bury 0 Oldham 1 Yes
-0.4
Scunthorpe 1 Walsall 1 -0.2
Brentford 3 Portsmouth 2 -0.1
+0.1
Tranmere 0 Hartlepool 1 -0.3
Bury 2 Scunthorpe 1 +0.2
Week of 4/20100.0*League Two100.0*Average seed
Portsmouth 3 Sheff Utd 0 -0.1
Walsall 1 Bury 1 +0.0
Week of 4/27100.0*League Two100.0*Average seed
Bury 3 Yeovil 2 +0.6
Points
Chance Will Win Championship