How are these numbers calculated?

Big Games

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

Week of 10/21100.0*Chance in playoffs100.0*Average seed
SHS 0 NCHS 8 +25.2
+0.8
WA 56 LHS 0 +3.5
+0.1
HCHS 35 DHHS 36 +1.0
If winner is:HomeAway
Week of 10/28100.0*Chance in playoffs100.0*Average seed
NCHS vs HCHS+18.7-18.7
+0.7-0.7
EHS vs SHS+6.4-6.4
+0.1-0.1
DHHS vs WA-2.0+2.0
-0.1+0.1

What If

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

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567Count
42-0In1001,557,588,772
31-183.3%847291613,110,754,376
20-215.01144524161,557,621,698
Total:70.4%29241819746,225,964,846
Games Above .500
Chance Will Make Playoffs