How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Chance in playoffs100.0*Average seed
Amy 91.46 Justin 143.52 +8.2
+0.1
Nick 82.22 Adam 116.64 +6.7
+0.2
Laurel 95.88 Ryan 94.36 -2.0
-0.1
Andy 88.24 Travis 125.5 -0.1
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Adam 94.26 Travis 152.68 -17.8
-0.4
Andy 141.42 Laurel 72.96 +10.7
+0.3
Amy 104.22 Ryan 91.7 -10.6
-0.1
Nick 139.9 Justin 134.9 +0.2
If winner is:HomeAway
Week of 12/8100.0*Chance in playoffs100.0*Average seed
Adam vs Justin+34.3-19.5
+0.6-0.3
Amy vs Nick-6.3+19.8
-0.1+0.3
Andy vs Ryan+19.3-6.1
+0.3-0.1
Laurel vs Travis-1.6+0.5
-0.4+0.1

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
81-058.4%16424242,952,519
70-14.604752175,366,089
Total:24.1%6186313118,318,608
Games Above .500
Chance Will Make Playoffs