How are these numbers calculated?

Big Games

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

Week of 4/21100.0*Average seed
MK Dons 1 Sheff United 0 -0.2
Huddersfield 1 Scunthorpe 0 +0.1
Week of 4/28100.0*Average seed
Rochdale 1 MK Dons 2 -0.2
Walsall 1 Huddersfield 1 -0.1
Week of 5/5100.0*Average seed
MK Dons 0 Walsall 1 +0.5
Huddersfield 2 Yeovil 0 +0.1
Points
Chance Will Win Championship