How are these numbers calculated?

Big Games

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

Week of 8/31100.0*Chance in playoffs100.0*Average seed
Sam 7 Stu 12 In
+0.3
Ian 5 Joe 12 -0.1
-0.1
Ethan 9 Miles 15 +0.1
+0.1
Ethan 10 Zakk 13 +0.1
Ethan 7 Stu 13 +0.1

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
6-7In10033,436,336*
Total:In10033,436,336

* Row combines multiple less frequent records.

Games Above .500
Chance Will Make Playoffs