How are these numbers calculated?

Big Games

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

Week of 12/13100.0*Chance in playoffs100.0*Average seed
Grand Blanc 26 Walled Lake Western 4 +0.5
+0.5
If winner is:HomeHome OTAway OTAway
South Lyon vs Grand Blanc-0.3-0.3+0.1+0.1
-1.0-1.0+0.3+0.4
Grand Blanc vs Wayne Memorial+0.1+0.1-0.1-0.1
+0.7+0.7-0.7-0.7
Lakeland vs Hartland+0.1+0.0-0.0-0.0
Milford vs Hartland+0.1+0.0-0.0-0.0
Howell vs Pinckney+0.0*+0.0*-0.1-0.0
-0.0*-0.0-0.0+0.1
Milford vs John Glenn+0.0+0.1-0.0-0.0
Salem vs Novi+0.0*+0.0-0.1-0.0
Walled Lake Central vs Pinckney-0.0-0.0+0.1+0.1
Wayne Memorial vs Brighton-0.0-0.0+0.1+0.0
Waterford Kettering vs Walled Lake Northern+0.1+0.1-0.0-0.1
Walled Lake Northern vs Howell-0.0-0.1+0.1+0.1
Walled Lake Central vs Plymouth-0.0-0.1+0.1+0.0
Waterford Kettering vs Northville-0.0-0.1+0.0+0.0
South Lyon East vs Walled Lake Western-0.0*-0.0*+0.1+0.0
South Lyon vs South Lyon East+0.0*+0.1*+0.0-0.0

* A starred number could be exactly 0 or just really small. The simulation did not run long enough to know.

What If

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

100100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112131415161718192021Count
1613-0In100011,384
1512-1In9820087,923
1411-2In8611020318,216
1310-3In55294130692,350
129-4In173214325001,016,158
118-5In11018342781001,059,947
107-6In00672533217100806,910
96-7In00017203126123000456,503
85-8In0003112530218200190,464
74-998.8%001415272817610058,312
63-1060.00282129251230012,658
52-116.90151831291321,845
41-12Out11274122158
30-13Out32473566
Total:99.8%20149181186432211000000004,713,394
Games Above .500
Chance Will Make Playoffs