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
Sandy 128 Poppa 106 In
+0.6
Nonnie 85 Brenna 96 +0.2
+0.1
Isaac 53 Spencer 88 -0.2
Jake 117 Nick 98 +0.1
-0.1
Graham 99 Scott 84 -0.0
Rodney 125 Dave 99 +0.2
Kelsie 68 Kara 89 -0.0
If winner is:HomeAway
Week of 11/30100.0*Chance in playoffs100.0*Average seed
Jake vs Sandy-0.8+0.7
Dave vs Nonnie-0.1+0.4
Kara vs Luke-0.0+0.4
Graham vs Spencer-0.0+0.1

What If

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

100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-L-Tplayoffs12345678910111213141516Count
102-0-0In017651711,588,839
91-1-0In017433914,210,489
80-2-0In280183,757,680
Total:In07342829229,557,008
Games Above .500
Chance Will Make Playoffs