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
David 74.9 Josh 101.1 +2.6
+0.8
Brandon 82.5 Sara 89.2 +0.8
+0.1
Michael 88.3 Dan 109.9 +0.8
+0.1
Mark 87.2 Ryan 78.7 +0.4
+0.0
Jake 119.2 Derek 108.6 +0.3
+0.1
Jonathan 113.2 Andrew 131.5 +0.0
If winner is:HomeAway
Week of 11/16100.0*Chance in playoffs100.0*Average seed
Josh vs Mark+31.7-3.4
+0.9-0.1
Ryan vs Jake-11.6+5.9
-0.2+0.1
Andrew vs Brandon+1.0-2.7
+0.1-0.2
Derek vs Jonathan-1.4+1.9
-0.1+0.1
Sara vs Michael+0.5-0.5
Dan vs David-0.0+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
83-093.2%08857671,184
72-153.4005344307,882,851
61-210.2105133500016,053,843
50-3Out219412891006,245,578
Total:21.0%00213822116200030,853,456
Games Above .500
Chance Will Make Playoffs