How are these numbers calculated?

Big Games

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

Week of 2/20100.0*Average seed
Islanders 113.047 Ducks 131.598 -0.4
Bruins 131.979 Blackhawks 119.466 -0.1
Lightning 130.342 Devils 95.466 +0.1
Week of 2/27100.0*Average seed
Blackhawks 108.267 Islanders 118.439 +0.1
Devils 118.912 Capitals 150.193 +0.1
If winner is:HomeAway
Week of 3/6100.0*Average seed
Devils vs Islanders-0.5+0.5

What If

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

100100100100100100100100100100100100100100100100100100100100
If finish:Chance inChance will finish regular season at seed
TWW-Lplayoffs1234567891011121314151617181920Count
101-0Out10011,885,259
90-1Out010011,882,901
Total:Out505023,768,160
Games Above .500
Chance Will Make Playoffs