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
Charleston vs Water Valley+13.3-17.8
+0.6-0.8
Palmer vs North Panola-0.4+0.6
Independence vs Holly Springs+0.4-0.5
If winner is:HomeAway
Week of 10/9100.0*Chance in playoffs100.0*Average seed
North Panola vs Charleston-12.7+17.0
-0.6+0.8
Water Valley vs Independence-0.4+0.5
Holly Springs vs Palmer+0.1-0.2

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
55-0In10038,713,430
44-1In70291188,061,785
33-299.8%93941110362,004,130
22-352.701141399341,085,503
11-41.012970157,585,459
00-5Out10029,084,577
Total:68.9%1817171616151,116,534,884
Games Above .500
Chance Will Make Playoffs