How are these numbers calculated?

Big Games

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

Week of 10/30100.0*Average seed
Shrew 6 Chara 16 -0.6
Hattrick 3 Glory 11 +0.0
Week of 11/6100.0*Average seed
Shrew 4 Puckin 5 -0.2
Puck Bud 11 Hattrick 4 +0.0
Chara 3 Butt H 10 +0.0
If winner is:HomeAway
Week of 11/13100.0*Average seed
Shrew vs Hattrick+0.5-0.5

What If

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

100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789Count
21-0Out10045,858,017
10-1Out39746,732,603
Total:Out514992,590,620
Games Above .500
Chance Will Make Playoffs