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
Huddersfield 2 Brighton 2 +0.1
Oldham 1 Southend 1 +0.0
Week of 5/2100.0*Average seed
Southend 2 Cheltenham 0 +0.2
Points
Chance Will Win Championship