How are these numbers calculated?

Big Games

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

If winner is:HomeAway
Week of 10/2100.0*Chance in playoffs100.0*Average seed
Humphreys County vs Ruleville Central-15.3+15.3
-0.7+0.7
If winner is:HomeAway
Week of 10/9100.0*Chance in playoffs100.0*Average seed
Ruleville Central vs Yazoo County+15.3-15.3
+0.7-0.7

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
55-0In10012,532,624
44-1In7029161,858,294
33-299.8%83842110123,719,383
22-353.101142398123,708,504
11-41.01297061,830,431
00-5Out10012,541,848
Total:66.7%171717171717396,191,084
Games Above .500
Chance Will Make Playoffs