How are these numbers calculated?

Big Games

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

Week of 6/26100.0*Average seed
Welch Wolverines 3 Lefty 2 -0.7
If winner is:HomeHome OTHome SOTieAway SOAway OTAway
Week of 7/3100.0*Average seed
New Edinburgh Pub vs Lefty-0.8-0.8-0.8-0.0+0.5+0.5+0.5
Moose Heads vs MLH+0.2+0.2+0.2+0.1-0.1-0.1-0.1
Rangers vs Chiefs+0.2+0.2+0.2+0.0-0.1-0.1-0.1
Winmar vs Welch Wolverines+0.0+0.0+0.0+0.0-0.1-0.1-0.1

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-L-Tplayoffs123456789Count
204-0-0In5541401,406,925
193-0-1In265121101,483,747
183-1-0In325472224,335,475
2-0-2In42947181579,952
172-1-1In0835431403,294,020
1-0-3In0735441398,847
162-2-0In0111444414,516,391
1-1-2In011145431823,760
0-0-4In112454206,281
151-2-1In022367802,223,664
0-1-3In022468568,483
141-3-0In066529001,951,366
0-2-2In07702300271,198
130-3-1In00365940470,580
120-4-0In1060264306,879
Total:In61321252860021,837,568
Games Above .500
Chance Will Make Playoffs