How are these numbers calculated?

Big Games

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

Week of 11/27100.0*Average seed
BRETT 107.5 JARED 101.5 +0.6
STANEK 92.5 KNIGHT 87.5 -0.2
STEWART 109.5 CASEY 85 -0.2
STEVE 131 ALEX 127.5 -0.1
NICK 65.5 KIRK 116 +0.1
If winner is:HomeAway
Week of 12/4100.0*Average seed
BRETT vs STEVE+0.5-0.4
KIRK vs STANEK+0.0-0.2
JARED vs STEWART+0.0-0.2

What If

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

100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs12345678910Count
62-0Out1346143,396,715
51-1Out306369,107,870
40-2Out474856,115,736
Total:Out06264719218,620,321
Games Above .500
Chance Will Make Playoffs