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
Nick 100.94 Hirson 79.74 +20.2
+0.9
Peter 119.92 Kyle 96.36 -4.5
-0.1
Caitlin 102.72 Domir 113.22 +1.4
+0.1
Stefan 106.64 Courtney 91.98 +0.9
Alex 78.86 Mitch 66.34 -0.9
Week of 12/1100.0*Chance in playoffs100.0*Average seed
Peter 83.88 Nick 73.04 -23.8
-0.8
Courtney 94.06 Alex 93.2 +5.8
+0.2
Hirson 142.9 Stefan 101.32 -3.9
-0.1
Kyle 102.72 Caitlin 139.4 -3.2
-0.1
Mitch 161.86 Domir 105.04 +0.2
If winner is:HomeAway
Week of 12/8100.0*Chance in playoffs100.0*Average seed
Caitlin vs Nick-29.9+29.9
-0.7+0.7
Alex vs Hirson+20.0-20.1
+0.2-0.2
Courtney vs Mitch+4.9-4.9
+0.1-0.1
Peter vs Stefan-4.9+4.9
-0.3+0.3

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
81-075.0%1931252510,927,567
70-115.115721210,931,173
Total:45.1%10152049621,858,740
Games Above .500
Chance Will Make Playoffs