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
wel 61 she 80.5 -17.1
-0.9
mcn 118 war 81 -4.0
-0.1
pin 126.5 tot 101 -2.4
-0.1
arn 58 thi 86.5 +2.2
+0.1
sco 129.5 con 127.5 -0.3
If winner is:HomeAway
Week of 11/24100.0*Chance in playoffs100.0*Average seed
wel vs tot+17.6-17.6
+0.9-0.9
dav vs thi-4.0+4.0
-0.2+0.2
mcn vs she-3.9+3.9
-0.1+0.1
pin vs tai+2.9-2.9
+0.1-0.1
sco vs war-1.7+1.7
-0.1+0.1
arn vs con+0.2-0.2
-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs123456789101112Count
01-22.5%3183932805,388,855
2-159.811742299105,387,232
3-099.3112423410101,798,256
0-3Out0423472331,797,153
Total:35.8%026111818191593014,371,496
Points
Chance Will Make Playoffs