How are these numbers calculated?

Big Games

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

Week of 4/24100.0*Average seed
Southampton 3 Carlisle 2 -0.4
Brighton 2 Bristol Rovers 1 -0.2
Oldham 2 Southend 2 +0.1
Walsall 3 Hartlepool 1 -0.0
Brentford 1 Yeovil 1 +0.0
Week of 5/1100.0*Average seed
Carlisle 1 Walsall 1 -0.4
Hartlepool 1 Exeter City 1 +0.1
Yeovil 3 Oldham 0 +0.1
Milton Keynes 0 Brighton 0 -0.0
Week of 5/8100.0*Average seed
Norwich 0 Carlisle 2 +0.8
Oldham 0 Charlton 2 +0.2
Brighton 1 Yeovil 0 +0.1
Brentford 0 Hartlepool 0 +0.1
Points
Chance Will Win Championship