How are these numbers calculated?

Big Games

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

Week of 11/14100.0*Chance in playoffs100.0*Average seed
Jess 48 Lori 51 -14.7
-1.3
Marianna 50 Tyler 48 -1.0
Greg 71 Rachel 46 -0.8
Wil 42 Jerry 44 +0.6
+0.0
Tim 72 Ed 17 +0.4
+0.1
Drew 47 Tom 48 -0.4
AM 59 Grace 65 -0.2
Week of 11/21100.0*Chance in playoffs100.0*Average seed
Jess 56 Jerry 49 +17.4
+1.9
Greg 77 Grace 41 -0.2
Rachel 57 Ed 83 -0.2
Wil 61 Tom 49 +0.1
-0.1
AM 81 Tyler 54 -0.1
+0.1
Marianna 76 Lori 62 +0.1
+0.0
If winner is:HomeAway
Week of 11/28100.0*Chance in playoffs100.0*Average seed
Jess vs Tom+27.2Out
+1.7-1.3
Wil vs Tim-9.7+7.3
-0.2+0.1
Drew vs Ed-6.5+7.5
+0.1-0.1
AM vs Lori+3.6-6.4
+0.2-0.3
Rachel vs Grace-0.2+0.1

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs1234567891011121314Count
61-0-047.5%12364112026,397,132
50-1-0Out103547835,319,888
Total:20.3%51517112027561,717,020
Games Above .500
Chance Will Make Playoffs