How are these numbers calculated?

Big Games

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

Week of 11/23100.0*Chance in playoffs100.0*Average seed
Nonnie 41 Aunt Dar 100 In
+0.2
Aunt Sandy 88 Uncle Dave 59 +0.1
Graham 98 Uncle Rodney 111 +0.1
-0.0
Kara 53 Poppa 95 +0.3
Spencer 92 Uncle Scott 37 -0.0
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Aunt Dar 100 Uncle Rodney 136 -0.3
Kara 106 Uncle Scott 93 -0.1
If winner is:HomeAway
Week of 12/7100.0*Chance in playoffs100.0*Average seed
Kara vs Uncle Dave-0.2+0.4
Aunt Dar vs Jake+0.1-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
91-0In366443,942,377
80-1In393324,206,623
Total:In2475168,149,000
Games Above .500
Chance Will Make Playoffs