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
Yazoo County vs Elzy-13.2+17.7
-0.6+0.8
Humphreys County vs Ruleville Central+0.5-0.6
Velma Jackson vs East Side-0.4+0.6
If winner is:HomeAway
Week of 10/9100.0*Chance in playoffs100.0*Average seed
Elzy vs Velma Jackson+14.0-18.7
+0.6-0.8
Ruleville Central vs Yazoo County-0.4+0.6

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
55-0In10030,967,645
44-1In70291167,752,058
33-299.8%93842110363,083,060
22-353.201142389385,352,079
11-41.012970200,216,228
00-5Out10041,202,182
Total:64.6%1516171717181,188,573,252
Games Above .500
Chance Will Make Playoffs