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
Isaac 53 Spencer 88 +12.0
+1.2
Nonnie 85 Brenna 96 +2.6
-0.1
Jake 117 Nick 98 +2.0
+0.1
Graham 99 Scott 84 +0.9
+0.1
Sandy 128 Poppa 106 -0.5
Dar 96 Luke 52 -0.3
-0.2
Kelsie 68 Kara 89 -0.1
+0.1
Rodney 125 Dave 99 -0.1
If winner is:HomeAway
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Graham vs Spencer-24.3+24.3
-1.0+1.0
Dave vs Nonnie+7.9-7.9
+0.2-0.2
Nick vs Poppa-5.1+5.1
-0.1+0.1
Rodney vs Brenna+2.7-2.7
+0.1-0.1
Isaac vs Scott+2.7-2.7
+0.2-0.2
Dar vs Kelsie-2.1+2.1
-0.2+0.2

What If

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

100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs12345678910111213141516Count
72-0-092.2%9582582,408,633
61-1-020.13174429704,816,522
50-2-0Out2144137602,412,781
Total:33.1%2161524181410109,637,936
Games Above .500
Chance Will Make Playoffs