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 -2.0
Shrewsbury 0 Bournemouth 3 +1.6
-0.4
Bury 0 Oldham 1 +0.6
-0.1
Oldham 1 Yeovil 0 +0.5
-0.1
Scunthorpe 1 Walsall 1 -0.4
Colchester 0 MK Dons 2 -0.2
+0.1
Brentford 3 Portsmouth 2 -0.1
Notts County 3 Colchester 1 -0.1
+0.1
Stevenage 0 Yeovil 2 +0.1
Week of 4/20100.0*League Two100.0*Average seed
MK Dons 0 Scunthorpe 1 +1.0
Colchester 0 Shrewsbury 0 No
+0.0
Shrewsbury 1 Oldham 0 +0.7
Oldham 2 Crawley Town 1 -0.2
Swindon 3 Stevenage 0 +0.1
Week of 4/27100.0*League Two100.0*Average seed
Shrewsbury 3 Portsmouth 2 +0.6
Leyton Orient 1 Oldham 1 +0.2
Stevenage 0 MK Dons 2 +0.1
Points
Chance Will Win Championship