How are these numbers calculated?

Big Games

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

Week of 11/10100.0*Chance in playoffs100.0*Average seed
tai 92 arn 71 -15.7
-1.0
war 93.5 wel 84.5 +1.8
+0.1
she 90.5 pin 83.5 +1.4
con 109 mcn 62 +1.1
tot 99 dav 116 -0.7
thi 115 sco 92.5 +0.6
+0.1
If winner is:HomeAway
Week of 11/17100.0*Chance in playoffs100.0*Average seed
arn vs thi+10.8-10.8
+0.8-0.8
wel vs she-2.3+2.3
mcn vs war-2.3+2.3
-0.1+0.1
pin vs tot-1.7+1.7
dav vs tai+0.2-0.2
-0.1+0.1
sco vs con+0.1-0.1
-0.1+0.1

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TPW-Lplayoffs123456789101112Count
02-21.6%021235381303,883,561
3-139.7019303720402,586,270
1-30.000319472732,585,006
4-095.80110313618400648,831
0-4Out0094447647,812
Total:16.5%0012591419201710410,351,480
Points
Chance Will Make Playoffs