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
HCHS 35 DHHS 36 -2.1
-0.7
SHS 0 NCHS 8 +1.5
-0.1
WA 56 LHS 0 +0.2
If winner is:HomeAway
Week of 10/28100.0*Chance in playoffs100.0*Average seed
NCHS vs HCHSOut+20.2
-0.5+0.7
DHHS vs WA-9.9+0.1
-0.2+0.0
EHS vs SHS+0.0-1.3

What If

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

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567Count
22-072.9%76610884,231,302,331
0-1Out10016,576,870,445*
Total:14.8%113228120,808,172,776

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs