How are these numbers calculated?

Big Games

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

Week of 10/27100.0*Chance in playoffs100.0*Average seed
Tom H 63.72 Shawn 81.86 -4.5
-0.4
Erica 86.48 Ethan 114.9 +1.6
Jenn 67.44 Tom K 81.56 +0.4
Laurel 76.62 Shara 108.42 +0.3
Justin 104.98 Dave 100.98 -0.2
-0.2
If winner is:HomeAway
Week of 11/3100.0*Chance in playoffs100.0*Average seed
Tom H vs Ethan+5.5-5.5
+0.5-0.5
Jenn vs Eric-1.9+1.9
Laurel vs Tom K-1.3+1.3
Justin vs Shara+0.3-0.3
-0.1+0.1
Erica vs Dave+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
115-0In9010171,897
104-1In5413321854,120
93-2In172714871,705,834
82-396.9%220403933301,702,675
71-460.65508423280851,749
60-57.90831401930170,869
Total:90.0%1717203419721005,457,144
Games Above .500
Chance Will Make Playoffs