How are these numbers calculated?

Big Games

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

Week of 11/24100.0*Average seed
Justin 119.34 Joe 87.48 +1.0
Rob 122.42 Michael 77.82 +0.1
Week of 12/1100.0*Average seed
Justin 100.44 Michael 113.84 -0.7
Joe 139.86 Craig 94.58 -0.2
Nick 73.58 Matt 115.2 +0.2
Randi 74.9 Laurel 99.04 -0.1
Rob 66.28 Kevin D 83.8 -0.1
Maria 88.22 Ross 108.72 +0.1
If winner is:HomeAway
Week of 12/8100.0*Average seed
Justin vs Ross+1.0-1.0
Michael vs Kevin D+0.2-0.2
Laurel vs Matt-0.2+0.2
Kevin V vs Nick+0.2-0.2
Joe vs Randi-0.2+0.2

What If

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

100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011121314Count
61-0Out1843327010,287,487
50-1Out14493710,284,853
Total:Out92123281920,572,340
Games Above .500
Chance Will Make Playoffs