How are these numbers calculated?

Big Games

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

Week of 11/21100.0*Chance in playoffs100.0*Average seed
Detroit 84 Pittsburgh 50 +12.9
+0.9
Halifax 74 Milwaukee 85 +4.7
+0.0
Smyrna 87 Philly 79 +4.0
+0.1
Dover 115 Kansas City 57 -0.3
Atlanta 75 Chicago 112 +0.3
+0.1
New York 63 Denver 92 -0.0
If winner is:HomeDrawAway
Week of 11/28100.0*Chance in playoffs100.0*Average seed
Chicago vs Detroit-20.5-13.2+20.9
-0.7-0.2+0.7
New York vs Halifax+6.0-0.8-5.9
+0.1-0.1-0.1
Pittsburgh vs Philly+3.4+2.7-3.5
+0.1+0.1-0.1
Smyrna vs Dover+2.1-1.8-2.0
+0.1-0.1-0.1
Atlanta vs Denver+1.8-1.7-1.7
+0.0-0.2-0.0
Milwaukee vs Kansas City-0.5-0.8+0.5

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-D-Lplayoffs123456789101112Count
93-0-0In1001,064,051
8.52-1-088.6%8911098,134
82-0-179.47919103,189,201
1-2-078.6792112,961
7.51-1-121.8224528500196,237
0-3-045.045352020
71-0-210.010353516403,186,168
0-2-19.39313817503,074
6.50-1-20.10317333413097,502
60-0-30.00031338341111,063,436
Total:45.5%452114864108,900,784
Games Above .500
Chance Will Make Playoffs