How are these numbers calculated?

Big Games

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

Week of 5/1100.0*Promoted100.0*Average seed
Accrington Stan 1 Charlton Athletic 1 No
AFC Wimbledon 1 Portsmouth 3 No
Shrewsbury Town 2 Oxford United 3 No
Fleetwood Town 1 Milton Keynes D 1 +0.1
Swindon Town 1 Ipswich Town 2 -0.2
Rochdale 1 Doncaster Rovers 2 -0.2
Burton Albion 1 Gillingham 1 +0.0
Bristol Rovers 0 Crewe Alexandra 1 -0.2
If winner is:HomeDrawAway
Blackpool vs Doncaster Rovers+0.2+0.0-0.2
Shrewsbury Town vs Ipswich Town+0.2+0.0-0.2
If winner is:HomeDrawAway
Week of 5/8100.0*Promoted100.0*Average seed
Portsmouth vs Accrington Stan-1.2-0.3+1.4
Crewe Alexandra vs Shrewsbury Town-0.3-0.1+0.3
Gillingham vs Plymouth Argyle-0.3+0.0+0.3
Milton Keynes D vs Rochdale-0.2+0.1+0.2
Doncaster Rovers vs Peterborough Un-0.2+0.0+0.2
Ipswich Town vs Fleetwood Town-0.2+0.0+0.1

What If

Chances based on how well the Accrington Stan finish out the regular season.   Explain

If finish:ChanceChance will finish season at seed
TPW-D-Lwins titlePromoted123456789101112131415161718192021222324RelegatedCount
Chance Will Win Championship