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
Independence vs Holly Springs-13.3+17.8
-0.6+0.8
Charleston vs Water Valley+0.5-0.6
Palmer vs North Panola-0.5+0.6
If winner is:HomeAway
Week of 10/9100.0*Chance in playoffs100.0*Average seed
Holly Springs vs Palmer+13.5-18.0
+0.6-0.8
Water Valley vs Independence-0.4+0.5
North Panola vs Charleston-0.1+0.1

What If

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

100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456Count
55-0In10029,084,464
44-1In70291157,596,989
33-299.8%93941110341,085,186
22-352.701141399361,994,695
11-41.012970188,064,126
00-5Out10038,709,424
Total:64.4%1516161717181,116,534,884
Games Above .500
Chance Will Make Playoffs