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
Walsall 3 Hartlepool 1 +0.6
Brighton 2 Bristol Rovers 1 -0.1
Southampton 3 Carlisle 2 +0.1
Leeds 4 Milton Keynes 1 +0.1
Oldham 2 Southend 2 +0.0
Brentford 1 Yeovil 1 +0.0
Week of 5/1100.0*Average seed
Carlisle 1 Walsall 1 +0.2
Milton Keynes 0 Brighton 0 +0.2
Swindon 3 Brentford 2 +0.1
Bristol Rovers 0 Norwich 3 +0.1
Week of 5/8100.0*Average seed
Walsall 2 Milton Keynes 1 +1.1
Brentford 0 Hartlepool 0 +0.3
Leeds 2 Bristol Rovers 1 +0.2
Brighton 1 Yeovil 0 -0.1
Points
Chance Will Win Championship