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 -16.5
-0.7
WA 56 LHS 0 +4.7
+0.1
HCHS 35 DHHS 36 -2.8
-0.1
If winner is:HomeAway
Week of 10/28100.0*Chance in playoffs100.0*Average seed
EHS vs SHS-18.6+18.6
-0.8+0.8
DHHS vs WA-6.2+6.2
-0.1+0.1
NCHS vs HCHS-2.6+2.6
-0.2+0.2

What If

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

100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567Count
42-0In75251,557,572,752
31-183.6%139431423,110,815,697
20-29.819276031,557,576,397
Total:69.3%192624141616,225,964,846
Games Above .500
Chance Will Make Playoffs