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*Average seed
Brentford 0 Hereford 3 -0.7
Barnet 2 Stockport 1 -0.3
Morecambe 1 Lincoln City 2 +0.1
Grimsby 1 Peterborough 4 +0.1
Bradford 1 Milton Keynes 2 +0.1
Bury 1 Rochdale 1 +0.0
Week of 5/3100.0*Average seed
Stockport 1 Brentford 0 -1.1
Lincoln City 2 Wrexham 4 +0.3
Accrington 0 Bury 2 -0.2
Rotherham 1 Barnet 0 +0.1
Milton Keynes 1 Morecambe 1 +0.0
Points
Chance Will Win Championship