How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
Tom K 52.98 Riley 68.8 +7.2
+0.7
Laurel 94.74 Jenn 97.14 -3.1
-0.1
Ethan 111.1 Shawn 96.48 +1.5
+0.1
Shara 71.8 Tom H 63.14 -1.2
-0.0
Dave 93.34 Eric 88.58 -0.9
-0.3
Justin 117.72 Erica 70.68 +0.8
If winner is:HomeAway
Week of 11/24100.0*Chance in playoffs100.0*Average seed
Laurel vs Riley-12.0+22.3
-0.6+1.2
Jenn vs Eric-5.2+1.8
-0.1+0.0
Erica vs Ethan-3.3+1.3
-0.2+0.1
Shara vs Shawn-1.2+1.6
+0.0-0.1
Justin vs Tom K-0.8+2.0
-0.0+0.1
Dave vs Tom H-0.4+0.7
-0.1+0.3

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
72-084.7%110363814207,457,125
61-16.216234128223,923,355
50-2Out063557118,758,928
Total:15.5%016813222722050,139,408
Games Above .500
Chance Will Make Playoffs