How are these numbers calculated?

Big Games

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

Week of 11/17100.0*Chance in playoffs100.0*Average seed
pin 126.5 tot 101 +11.8
+0.8
mcn 118 war 81 -2.6
wel 61 she 80.5 +2.5
+0.1
arn 58 thi 86.5 +1.7
dav 105 tai 67.5 -0.6
sco 129.5 con 127.5 -0.3
+0.1
If winner is:HomeAway
Week of 11/24100.0*Chance in playoffs100.0*Average seed
pin vs tai+7.4-7.4
+0.9-0.9
dav vs thi-1.7+1.7
wel vs tot-1.4+1.4
-0.1+0.1
mcn vs she-1.2+1.2
-0.1+0.1
sco vs war-0.4+0.4
+0.1-0.1
arn vs con-0.2+0.2
+0.1-0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs123456789101112Count
02-1In327462225,388,514
1-298.6%07344315105,385,301
3-0In4743101,798,883
0-343.7011333617301,798,798
Total:92.4%71621211810520014,371,496
Points
Chance Will Make Playoffs