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
Laurel 95.88 Ryan 94.36 +15.3
+0.5
Amy 91.46 Justin 143.52 +2.8
+0.1
Nick 82.22 Adam 116.64 -1.6
-0.1
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Andy 141.42 Laurel 72.96 -23.9
-0.7
Adam 94.26 Travis 152.68 +7.9
+0.2
Amy 104.22 Ryan 91.7 -6.4
-0.1
If winner is:HomeAway
Week of 12/8100.0*Chance in playoffs100.0*Average seed
Laurel vs Travis+12.8Out
+0.7-0.2
Amy vs Nick-2.0+6.3
-0.0+0.1
Andy vs Ryan+6.1-1.9
+0.1-0.0
Adam vs Justin-3.4+2.0
-0.1+0.1

What If

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

100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678Count
71-016.9%215503328,439,824
60-1Out10089,878,784
Total:4.1%041284118,318,608
Games Above .500
Chance Will Make Playoffs