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*Average seed
Erica 73.98 Shawn 61.7 +0.5
Eric 95.94 Tom K 95.72 -0.1
Justin 73 Riley 130.16 -0.1
Week of 11/24100.0*Average seed
Erica 104.54 Tom H 64.7 +0.4
If winner is:HomeAway
Week of 12/1100.0*Average seed
Erica vs Shara+0.4-0.4
Eric vs Ethan-0.3+0.3
Dave vs Shawn+0.2-0.2

What If

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

100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs123456789101112Count
51-0Out577185,140,355
40-1Out2550255,140,789
Total:Out351341310,281,144
Games Above .500
Chance Will Make Playoffs