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*Average seed
Bristol Rovers 0 Crewe Alexandra 1 +1.1
Rochdale 1 Doncaster Rovers 2 -0.2
Swindon Town 1 Ipswich Town 2 -0.1
Shrewsbury Town 2 Oxford United 3 +0.1
Accrington Stan 1 Charlton Athletic 1 -0.0
If winner is:HomeDrawAway
Blackpool vs Doncaster Rovers+0.1+0.0-0.2
Shrewsbury Town vs Ipswich Town+0.1+0.0-0.1
If winner is:HomeDrawAway
Week of 5/8100.0*Average seed
Crewe Alexandra vs Shrewsbury Town+1.4-0.3-1.3
Portsmouth vs Accrington Stan+0.3+0.1-0.3
Gillingham vs Plymouth Argyle-0.3+0.1+0.2
Milton Keynes D vs Rochdale-0.2-0.1+0.2
Doncaster Rovers vs Peterborough Un-0.2+0.0+0.1
Ipswich Town vs Fleetwood Town+0.0+0.2-0.1

What If

Chances based on how well the Crewe Alexandra finish out the regular season.   Explain

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