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
Aunt Sandy 88 Uncle Dave 59 -20.5
-0.8
Graham 98 Uncle Rodney 111 +4.3
+0.1
Spencer 92 Uncle Scott 37 +1.3
+0.1
Kara 53 Poppa 95 +1.3
+0.1
Nonnie 41 Aunt Dar 100 +1.2
+0.1
Isaac 75 Jake 86 +0.1
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Spencer 106 Uncle Dave 129 +23.7
+0.9
Nonnie 86 Jake 93 -9.3
-0.1
Graham 138 Aunt Sandy 113 -7.7
-0.2
Isaac 48 Poppa 106 +4.0
+0.1
Kara 106 Uncle Scott 93 -1.3
-0.1
If winner is:HomeAway
Week of 12/7100.0*Chance in playoffs100.0*Average seed
Kara vs Uncle DaveOut+33.3
-0.5+0.5
Aunt Dar vs Jake+16.7-16.7
+0.2-0.2
Graham vs Spencer-8.3+8.3
-0.2+0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
71-066.7%3333339,642,111
60-1Out1009,643,817
Total:33.3%17176719,285,928
Games Above .500
Chance Will Make Playoffs