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
Preston 2 Ipswich 2 -0.2
Plymouth 3 Blackpool 0 +0.1
Barnsley 3 Charlton 0 -0.1
Coventry 1 Wolves 1 +0.0
Norwich 3 QPR 0 +0.0
Week of 5/4100.0*Average seed
Bristol City 3 Preston 0 -0.5
Blackpool 1 Watford 1 +0.2
Sheff Wed 4 Norwich 1 +0.2
Cardiff 3 Barnsley 0 +0.1
QPR 0 West Brom 2 +0.1
Points
Chance Will Win Championship