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 2 Scunthorpe 1 +14.2
-0.4
Bury 0 Oldham 1 +11.2
-0.1
Oldham 1 Yeovil 0 +8.4
-0.1
Scunthorpe 1 Walsall 1 +4.9
-0.1
Colchester 0 MK Dons 2 -3.3
+0.1
Brentford 3 Portsmouth 2 -1.7
+0.1
Notts County 3 Colchester 1 -1.6
+0.1
Shrewsbury 0 Bournemouth 3 -0.9
Tranmere 0 Hartlepool 1 +0.2
-0.1
Week of 4/20100.0*League Two100.0*Average seed
MK Dons 0 Scunthorpe 1 -10.8
+0.4
Oldham 2 Crawley Town 1 +1.4
Colchester 0 Shrewsbury 0 +0.2
Portsmouth 3 Sheff Utd 0 -0.2
Hartlepool 1 Brentford 1 +0.1
Walsall 1 Bury 1 +0.0
Week of 4/27100.0*League Two100.0*Average seed
Scunthorpe 2 Swindon 1 -19.9
+0.3
Carlisle 0 Colchester 2 Yes
-0.1
Shrewsbury 3 Portsmouth 2 +0.1
Points
Chance Will Win Championship