How are these numbers calculated?

Big Games

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

Week of 11/9100.0*Chance in playoffs100.0*Average seed
Purvis 81.4 McNichols 87.3 Out
-0.3
Barnett 123.8 Vanzant 147.1 +0.1
Metheny 85.6 M Crouch 89.7 +0.1
Lippincott 149.4 Salsberry 111.8 -0.4
If winner is:HomeAway
Week of 11/16100.0*Chance in playoffs100.0*Average seed
M Crouch vs Purvis-0.2+0.7
McNichols vs Barnett+0.1-0.5
Salsberry vs Metheny+0.0-0.2

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
52-0Out125571601,940,926
41-1Out174636124,586,113
30-2Out7751958,345,181
Total:Out01618621384,872,220
Games Above .500
Chance Will Make Playoffs