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*Average seed
Bradford 3 Rotherham 0 +0.9
Accrington 1 Chesterfield 0 +0.2
Shrewsbury 0 Lincoln City 0 +0.1
Exeter City 2 Morecambe 2 +0.1
Week of 5/2100.0*Average seed
Chesterfield 0 Bradford 2 +0.8
Morecambe 0 Bournemouth 4 +0.2
Dag & Red 1 Shrewsbury 2 -0.1
Points
Chance Will Win Championship