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 -10.4
-0.7
WA 56 LHS 0 +2.7
+0.1
SHS 0 NCHS 8 -1.6
-0.1
If winner is:HomeAway
Week of 10/28100.0*Chance in playoffs100.0*Average seed
NCHS vs HCHSOut+5.7
-0.4+0.4
DHHS vs WA-3.4+3.4
-0.1+0.1
EHS vs SHS+1.0-1.0

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
22-022.8%1223429141,557,652,463
0-1Out1004,668,312,383*
Total:5.7%0597786,225,964,846

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs