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 -33.8
-1.2
Isaac 75 Jake 86 +4.2
Graham 98 Uncle Rodney 111 +2.0
+0.1
Nonnie 41 Aunt Dar 100 +1.7
+0.1
Kara 53 Poppa 95 +0.8
+0.1
Spencer 92 Uncle Scott 37 +0.2
+0.0
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Spencer 106 Uncle Dave 129 +35.8
+1.4
Nonnie 86 Jake 93 -8.9
Isaac 48 Poppa 106 +4.0
+0.1
Graham 138 Aunt Sandy 113 -2.1
-0.0
Kara 106 Uncle Scott 93 -0.1
+0.0
If winner is:HomeAway
Week of 12/7100.0*Chance in playoffs100.0*Average seed
Kara vs Uncle DaveOut+52.6
-0.5+0.9
Aunt Dar vs Jake+6.6-11.9
+0.1-0.2
Graham vs Spencer-6.1+2.3
-0.3+0.1

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
71-081.5%55271824,210,397
60-1Out10043,938,603
Total:29.0%2097168,149,000
Games Above .500
Chance Will Make Playoffs